Original Article
Clinical utility of PET/MRI in multiple myeloma
Multiple myeloma (MM) is a haematological malignancy characterised by abnormal accumulation of malignant plasma cells and is associated with anaemia, renal impairment, hypercalcemia and bone lesions. A sensitive method to detect bone lesions is crucial as it could determine the decision to start treatment. In this era, the International...
Commentary
Transforming radiology to support population health
The recent launch of Healthier SG—a national initiative by Singapore’s Ministry of Health (MOH) focusing on preventive health—will have far-reaching effects on the delivery of health services in Singapore.1 Part of it involves a shift away from tertiary hospital-based to community-based care, to improve diagnostic imaging services in the...
Original Article
Restaging of rectal cancer with hybrid positron emission tomography magnetic resonance imaging after preoperative chemoradiotherapy
Neoadjuvant chemoradiotherapy (CRT) followed by surgery is the current standard of care for locally advanced rectal cancers. Randomised trials have shown that a neoadjuvant approach results in improved tumour downstaging, improved R0 resections, improved local control and increased sphincter preservation rates.1 Reliable response assessment and restaging post-CRT add invaluable...
Original Article
Clinical outcomes and management of contrast hypersensitivity in patients requiring repeated computed tomography imaging
Allergic and non-allergic hypersensitivity reactions to iodinated contrast media (ICM) are increasingly recognised, particularly the latter where there is greater clarity on pathomechanisms.1 There is limited evidence for the use of corticosteroids as premedication to prevent the occurrence of contrast-related reactions. At our institution, a dose of 30mg oral...
Editorial
Preventing recurrent hypersensitivity reactions to iodinated contrast media
Iodinated contrast media (ICM) is one of the most commonly used drugs in the practice of modern medicine. ICM, as the name implies, is a contrast media that contains iodine. It is frequently used in computed tomography (CT) and angiographic procedures, to highlight important anatomical structures and for the...
Letter to the Editor
Erdheim-Chester disease: Imaging spectrum of multisystemic manifestations
Dear Editor,
Erdheim-Chester disease (ECD) is a rare non-Langerhans histiocytosis, usually affecting middle-aged to older adults. It is a multisystemic disease with protean clinical manifestations. It can involve single or multiple organs, and presentations range from asymptomatic lesions detected incidentally on imaging to severe organ dysfunction. Hence, accurate and timely...
Commentary
Low-dose computerised tomography screening for lung cancer in Singapore: Practical challenges of identifying participants
INTRODUCTION
In March 2022, the European Commission on cancer screening suggested the inclusion of low-dose computerised tomography (LDCT) for lung cancer, targeted at current and former smokers.1 The aim of LDCT screening is to increase early detection, decrease diagnoses at metastatic stage of the disease and improve overall 5-year...
Images in Medicine
TB or not TB? The axillary lump question
An 81-year-old woman of healthy weight presented with a 2-week history of a painless right axillary lump. Physical examination revealed a 2cm firm nodule with a central keratinous plug in the right axilla (Fig. 1). The surrounding skin was pigmented, non-tender and indurated. Sonography of the nodule demonstrated an...
Letter to the Editor
Safe time interval for screening estimated glomerular filtration rate prior to gadolinium-enhanced MRI scan
Dear Editor,
Magnetic resonance imaging (MRI) contrast media are commonly used in medical imaging and are usually gadolinium-based contrast agents (GBCAs). They can be divided into 3 groups. Group I consists of compounds with linear molecular structures. Group II consists of compounds with macrocyclic molecular structures. Group III currently includes...
Commentary
The Lancet Commission on diagnostics: What it means for Singapore
Effective healthcare systems depend on a functioning healthcare value chain—defined as a care cascade comprising screening, diagnosis, treatment and follow-up. The tremendous heterogeneity and global disparity regarding this healthcare value chain has been one of the fundamental problems with prioritised urgency since the United Nation’s Millennium Development Goals were...
Others
A Case Report of Neutrophilic Eccrine Hidradenitis in a Patient Receiving Chemotherapy for Acute Myeloid Leukaemia
Neutrophilic eccrine hidradenitis (NEH) is a neutrophilic dermatosis primarily affecting the eccrine glands and occurs most commonly in patients undergoing chemotherapy for a malignancy.
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Original Article
Reduction in Retake Rates and Radiation Dosage Through Computed Radiography
New computed radiography imaging systems are slowly gaining a foothold in radiological departments worldwide. By computed radiography we mean a digital imaging system which exposes a photostimulable phosphor image receptor plate to obtain a latent image using existing radiographic equipment.
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Original Article
Computed Tomographic and Magnetic Resonance Imaging Findings in Paranasal Sinus Involvement in Nasopharyngeal Carcinoma
Nasopharyngeal carcinoma (NPC) is an aggressive infiltrative neoplasm. Spread into the paranasal sinuses is often seen but the frequency is documented in only a few series.
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Others
Adjuvant Chemotherapy for Patients with Resected Dukes’ C and High-risk B2 Colon Cancer with Fluorouracil and Levamisole
Carcinoma of the large bowel is the second leading cause of cancer mortality in Singapore. Although the great majority of patients are discovered at a stage where resection with curative intent is possible, almost half of the patients afflicted will die of it.
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Commentary
Experience with a Nine-step Policy Dealing with Requests for Medically Inappropriate Interventions for Cancer
Although great strides have been made in treating cancers, a significant number of patients still reach the point at which no curative treatment is available. Physicians then face the difficult task of informing patients that, although palliation is always possible, cure is not.
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Commentary
Invasive Cancer after Treatment of Cervical Intraepithelial Neoplasia
The objective of a cervical screening programme is to prevent invasive cancer of the cervix by detecting and treating pre-invasive disease of the cervix. The impact of the programme depends both on the detection of women with cervical intraepithelial neoplasia (CIN) and upon their being treated effectively.
This article is...
Commentary
The Polarprobe—Emerging Technology for Cervical Cancer Screening
Cervical cancer is a preventable disease that affects nearly half a million women worldwide. The Papanicolaou smear has been used for screening for over fifty years and the test has the advantage of fast and relatively easy sample collection.
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Others
Occult Virilizing Ovarian Tumours in Postmenopausal Women: Problems in Evaluation with Reference to a Case
A remarkable variety of endocrinologic disorders may cause virilization syndromes. This can pose a diagnostic dilemma to even the most experienced clinicians.
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Others
Occult Virilizing Ovarian Tumours in Postmenopausal Women: Problems in Evaluation with Reference to a Case
A remarkable variety of endocrinologic disorders may cause virilization syndromes. This can pose a diagnostic dilemma to even the most experienced clinicians.
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Others
Pelvic Spleen Masquerading as an Ovarian Neoplasm
A 53-year-old Caucasian woman, a receptionist in a general practice, was referred to the gynaecology outpatient clinic with an 18-month history of heavy, irregular menses and a pelvic mass on an abdominal ultrasound arranged by her General Practitioner (GP). She was otherwise asymptomatic.
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Others
A Case Report—Delayed Vesicocutaneous Fistula After Radiation Therapy for Advanced Vulvar Cancer
To our knowledge this is the first reported case of an isolated vesicocutaneous fistula related to previous radiation therapy for recurrent vulvar cancer.
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Review Article
Optimal Treatment in Gestational Trophoblastic Disease
Gestational trophoblastic diseases (GTD) encompass a spectrum of interrelated conditions:
Hydatidiform mole (HM)
Invasive mole (IM)
Choriocarcinoma (CC)
Placental site trophoblastic tumour (PSTT)
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Review Article
Fallopian Tube Carcinoma—A Review
Fallopian tube cancer is the least common of gynaecological malignancies. It was first described by Renaud in 1847.
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Review Article
Current Management of Early Vulvar Cancer
Carcinoma of the vulva is an uncommon malignancy, but one that is amenable to early diagnosis if symptoms and signs are appropriately investigated. Although patient and physician delay remains common, an increasing number of patients are being diagnosed with early stage disease.
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Review Article
Topoisomerase-I Inhibitors in Gynaecologic Tumours
Topoisomerases are essential nuclear enzymes with a multiplicity of cellular functions involving DNA replication, RNA transcription, mitosis, and chromosome condensation. Two classes have been identified: the class I topoisomerases, named “I” because they induce single-strand breaks and reunions of the DNA double helix, and the class II topoisomerases, named...
Review Article
Screening for Ovarian Cancer
Ovarian cancer is the most common gynaecological malignancy with over 5000 new cases diagnosed every year in the UK and 22 000 in the United States. Four thousand women die each year of ovarian cancer in England and Wales, and 13 000 die in the USA.
This article is available...
Review Article
Biomarkers in Carcinoma of the Cervix: Emphasis on Tissue-related Factors and Their Potential Prognostic Factors
Accurate staging is of utmost importance in determining the prognosis of carcinoma of the cervix. Demographic features such as race and socio-economic status have been demonstrated as not having significant influence.
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Review Article
The Management Dilemma of the Mildly Abnormal Smear: Fact or Fiction?
Carcinoma of the cervix is still a relatively common gynaecological malignancy. However, despite being potentially preventable it still claims the lives of many women even in those countries where organised screening programmes exist.
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Review Article
Adenocarcinoma of the Cervix
It is clear from studies in Canada, Scandinavia, and more recently the United Kingdom, that routine Pap smear screening has not only reduced the incidence of squamous carcinoma of the cervix but indeed in the last 10 to 15 years has halved the mortality rate from this disease. In...
Original Article
Malignant Ovarian Germ Cell Tumours: Experience in the National University Hospital of Singapore
One of the most remarkable advances in the management of gynaecological cancers is in malignant ovarian germ cell tumours. Before the early 70s, some of the malignant ovarian germ cell tumours had a notoriously bad reputation in terms of aggressiveness and poor prognosis.
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Original Article
A Phase II Study of Combined CPT-11 and Mitomycin-C in Platinum Refractory Clear Cell and Mucinous Ovarian Carcinoma
Platinum resistance, either de novo or acquired, is a major obstacle in the treatment of advanced ovarian cancer. Platinum-resistance has been classified into the following three categories; (1) primarily (intrinsically) platinum-resistant disease: tumours showing no change (NC) or progressive disease (PD) while on initial platinum-based chemotherapy; (2) secondarily platinum-resistant...
Original Article
Single Agent Paclitaxel in Resistant and Relapsed Epithelial Ovarian Cancer After First-line Platinum-based Chemotherapy—Experience in an Asian Population
Ovarian carcinoma ranks fourth among causes of death in women and is the leading cause of death from gynaecological malignancies in Western countries. In Singapore, the incidence of this cancer has been rising for the last 25 years.
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Original Article
Uterine Papillary Serous Carcinoma—The KK Hospital Experience
Endometrial carcinoma comprises a morphologically heterogeneous group of tumours. Several authors during the 1960s and 1970s described an unusual variant of endometrial cancer containing psammoma bodies.
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Original Article
Radiotherapy as Local Adjuvant Treatment for Endometrial Carcinoma—A Review of 45 Patients
Radiotherapy as an adjunct to surgery has long been used in the management of endometrial carcinoma with the intent to improve local tumour control as well as to achieve excellent survival rates. Over the years, however, the specific role and relative benefit of postoperative radiotherapy for this particular cancer...
Original Article
Outcome of Obstructive Uropathy After Pelvic Irradiation in Patients with Carcinoma of the Uterine Cervix
Radiotherapy is the mainstay treatment for locally advanced carcinoma of the cervix. It is also administered as an adjuvant therapy to patients deemed at high risk for local recurrence after radical hysterectomy.
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Original Article
The Surgical Management of Colorectal Complications from Irradiation for Carcinoma of the Cervix
Radiation bowel injury is a significant clinical problem because of the technical difficulties of surgery. Among the more common causes is radiation of carcinoma of the cervix, because radiotherapy is the principle mode of treatment for this fourth most common malignancy in women in Singapore (after carcinoma of the...
Original Article
Adjuvant Chemotherapy in “High Risk” Patients after Wertheim Hysterectomy—10-year Survivals
Wertheim radical hysterectomy has today become an accepted method of management of stage IB and early stage IIA cervical carcinoma, particularly in young patients in whom preservation of ovarian and coital function cannot be achieved if they were subjected to radiotherapy instead. However, a group of patients undergoing radical...
Original Article
A Review of Patients with High-risk Carcinoma of the Cervix Treated with Combined Surgery and Postoperative Radiotherapy
It is generally accepted that early stage invasive carcinoma of the cervix, stage I to stage IIA disease, can be treated with equal effectiveness with either radical hysterectomy or radical radiotherapy. However a proportion of patients treated with surgery may be classified as having a significant risk of relapse...
Original Article
Outcome of Early Cervical Carcinoma Treated by Wertheim Hysterectomy with Selective Postoperative Radiotherapy
Cancer of the cervix is the fourth most common cancer in females in Singapore after breast, colorectal and lung cancers. It forms 7.8% of all cancers in females for the period 1988 to 1992.
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Editorial
Gynaecologic Oncology—The Next Lap
Cancer of the pelvic reproductive organs and external genitalia accounts for one in six cancers in women. It can occur in women of all age groups: rhabdomyosarcoma in young girls, germ cell tumours in teenage girls and young women, cervical cancer in the middle age women, and epithelial ovarian...
Others
Book Review
This book is a collection of 30 case studies, which were published in the Singapore Medical Journal from 1994 to 1997. They include interesting cases from all the major anatomical regions and organ systems.
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Original Article
Bone Mineral Density—Correlation between Quantitative Ultrasound Characteristics and Dual Energy X-ray Absorptiometry
Osteoporosis is well documented to be a significant determinant of the risk of fracture and its assessment in vivo has been based on various methods for measuring bone mineral density (BMD). Dual-energy X-ray absorptiometry (DXA) has proven so far to be reasonably precise (about 1% to 2%) and accurate...
Review Article
A Review of the Role of Magnetic Resonance Imaging in the Evaluation of Shoulder Impingement Syndrome and Rotator Cuff Tendon Tears
In the evaluation of chronic shoulder pain and dysfunction clinically suspected to be due to shoulder impingement syndrome and rotator cuff tendon tears, magnetic resonance imaging (MRI) has virtually replaced double contrast shoulder arthrography. MRI has the advantage of demonstrating the shoulder joint in multiple anatomical planes with excellent...
Original Article
Portable Chest Radiography: Comparison of High-resolution Digital Displays with Laser Printed Digital Film
In most institutions, about 10% to 25% of imaging examinations are recorded digitally (e.g. digital subtraction angiography, computed tomography, magnetic resonance imaging and ultrasound). Conventional-projection radiographic studies are still displayed in an analog fashion (on film).
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Original Article
Percutaneous Needle Aspiration in the Treatment of Hepatic Abscess: Factors Influencing Patients’ Outcome
Liver abscess traditionally has been treated by open surgical drainage, mortality rates being as high as 80% to 100% if left untreated. However, with the advent of modern non-invasive imaging techniques, percutaneous techniques performed under imaging guidance have, over the recent years, become increasingly acceptable as a suitable alternative...
Original Article
Contrast-Enhanced Magnetic Resonance Imaging of the Internal Auditory Canals and Posterior Fossa
Contrast-enhanced magnetic resonance imaging (MRI) is now the gold-standard examination for the exclusion of acoustic schwannomas or other posterior fossa tumours. We retrospectively reviewed 314 cases done over a period of 2 years and 9 months, correlating presenting symptoms with scan findings.
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Review Article
Imaging of Thoracic Manifestations of Scleroderma
Systemic sclerosis (SScl) is a generalised disease of the connective tissue characterised by fibrosis and vascular changes affecting the skin, lungs, gastrointestinal tract, kidneys, and heart. The American College of Rheumatology has proposed that for the purpose of clinical trials and surveys, the diagnosis is made if the patient...
Review Article
Overview of Imaging in Rheumatologic Diseases
Since the discovery of X-rays over a century ago, radiology has played a pivotal role in rheumatology and diseases of the joints. The innovations and advances in technology in imaging and interventional radiology today enable more precise and earlier detection, assessment and treatment.
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Original Article
Is Staging of Benign Prostatic Hyperplasia (BPH) Feasible?
Staging of disease is important. It serves as a guide for further management and also for comparing the results of treatment. Traditionally this has been used for malignant disease.
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Original Article
Magnetic Resonance Imaging of Brain Metastases: Magnetisation Transfer or Triple Dose Gadolinium?
Accurate detection of brain metastases is an important part of tumour staging. Magnetic resonance (MR) imaging is well accepted as a sensitive tool in the detection of brain metastases.
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Original Article
Concurrent Chemoradiotherapy in Patients with Locally Advanced Nasopharyngeal Carcinoma of the Undifferentiated Type
Nasopharyngeal carcinoma (NPC) of the undifferentiated type has a unique geographic distribution and is rather different, biologically and aetiologically, from squamous cell cancer of the head and neck. This disease is of epidemiological concern in Singapore, with an age-standardized rate of 18.4 per 100,000 in Chinese males and 7.3...
Original Article
Radiological Placement of 211 Central Venous Catheters: Outcome and Complications
Long-term central venous access is an important part of modern medical practice, especially in the haematology and oncology units. Central venous (CV) catheters are used for the administration of anti-neoplastic agents, immunosuppressive drugs, antibiotics, blood components, hyperalimentation, for frequent blood sampling, and for acute and temporary haemodialysis prior to...
Review Article
Cancer Gene Therapy—Fantasy or Foresight?
Genes define life, at least in its biological sense. The prospect of being able to manipulate human biological processes through genetic engineering understandably evokes a sense of excitement and omnipotence. Indeed, the birth of recombinant DNA technology in the 1970s immediately opened the floodgates for the successful manipulation of...
Original Article
A Preliminary Study of the Immunohistochemical Detection of a Novel Tumour Marker, 22-1-1 Antigen, in Gynaecological Cancer Specimens
Monoclonal antibodies expressed against specific tumour cells can play a useful role in the study and management of such cancers. Such antibodies have been useful in diagnosis and treatment of certain cancers (as tumour markers) and many such antibodies have now been described.
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Others
3rd Yahya Cohen Lecture: The Role of the Myofibroblast-Like Cell in Hepatocellular Carcinoma—Host Defence?
It is indeed a great honour for me to be named the third Yahya Cohen lecturer and I would like to express my deepest thanks and appreciation to the Academy of Medicine Singapore for having selected me for this award. At this lecture, I would like to share with...
Others
1998 Runme Shaw Memorial Lecture: Somatic Evolution of Cancer
The interpretation of cancer as a somatic evolutionary process involving genetic mutation followed by selection, goes back to the early years of this century. Boveri’s hypothesis put forward in 1914 that cancer was associated with abnormalities of the chromosomes and Tyzzer and Strong’s experiments of transplantable tumours in 1916...
Review Article
Prognostic Factors in Endometrial Carcinoma
In the United States of America, endometrial carcinoma is the most common cancer of the female genital tract and has an annual incidence of 72 per 100,000 women. In Singapore it is the third most common female genital tract cancer after cancer of the cervix and ovary.
This article is...
Original Article
Continuous Infusion 5-fluorouracil as Salvage Chemotherapy in Patients with Advanced Colorectal Cancer
Studies have shown beyond doubt that chemotherapy for metastatic colorectal cancer prolongs survival, impedes progression and stabilises disease. Compared with supportive care alone, it could also provide considerable benefits in terms of improved quality of life.
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Commentary
Tissue Microangiography Using a Simplified Barium Sulphate Cadaver Injection Technique
The understanding of blood supply is the cornerstone of successful tissue transfer in reconstructive surgery. This understanding has been derived largely from cadaveric dissections, combined with injections to outline the blood supply.
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Commentary
Effect of Antiangiogenic Agents on Experimental Animal Models of Hepatocellular Carcinoma
Metastatic spread is the principal reason of treatment failure in solid tumours. Surgery, radiation therapy and chemotherapy have not manifestly altered the prognosis for metastatic tumours.
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Review Article
Murine Metastatic Tumour Models for Cancer Gene Therapy Research
In the evaluation of any new cancer treatment, the use of appropriate experimental animal tumour models to bridge the gap between in vitro discovery and its eventual clinical testing is an important step. In vitro experimentation does not take into consideration the complex biological interplay among the host tissues,...
Original Article
An Animal Model for the Study of Hepatic Stellate Cell and Hepatocellular Carcinoma Interaction
Hepatic stellate cells (HSC) are mesenchymal cells that are prominent in various forms of liver injury, in particular with cirrhosis or carbon tetrachloride-induced fibrosis. HSC are also being increasingly reported around and within hepatocellular cancers (HCC), and have been thought to be responsible for the capsule formation in these...
Original Article
Synergistic Effect of Hepatitis B Virus and Aflatoxin B1 in Hepatocarcinogenesis in Tree Shrews
Primary hepatocellular carcinoma (HCC) is one of the commonest cancers in some parts of the world including several areas in China. The geographically distinct distribution of HCC indicates there are some special factors which play key roles in hepatocarcinogenesis.
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Original Article
The Expression of Insulin-like Growth Factor II, Hepatitis B Virus X Antigen and p21 in Experimental Hepatocarcinogenesis in Tree Shrews
Hepatocarcinogenesis is a multistage and multifunctional process. Epidemiological studies indicate that contamination of food with aflatoxin B, (AFB,) and chronic infection with hepatitis B virus (HBV) are the major risk factors for human primary liver cancer.
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Original Article
Radionuclide Studies of Articular Cartilage in the Early Diagnosis of Arthritis in the Rabbit
Osteoarthritis is a common joint disease that involves destruction of articular cartilage. Magnetic resonance imaging (MRI) provides a sensitive imaging modality for the diagnosis of osteoarthritis.
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Others
Retroperitoneal Castleman’s Disease in the Perinephric Space—Imaging Appearance: A Case Report and a Review of the Literature
Castleman’s disease (CD) was first proposed by Castleman in 1954. It is usually found in the mediastinum, but other sites have been described.
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Original Article
Extended Resection of Locally Advanced (T4) Stomach Cancer
Cancer is the most common cause of death in Singapore. Although there is a gradual decline in incidence of stomach cancer over the years, it is the third (10.1%) most common cancer in males and the fifth (6.5%) most common cancer in females in Singapore.
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Original Article
Evaluation of Technetium-99m Ciprofloxacin (Infecton) in the Imaging of Infection
Over the past 10 years we have used various radiopharmaceuticals (RPCs) for imaging of inflammation and infection. These include gallium-67 citrate and the technetium-99m labelled nanocolloids, immunoglobulin (IgG), antigranulocyte antibodies (AGAB) and HMPAO-labelled leukocytes.
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Others
Design of Phase I and II Clinical Trials in Oncology and Ethical Issues Involved
Drug development is costly and time-consuming in terms of economic, patient and research resources. An integrated effort involving academia, industry, and regulatory authorities is needed to ensure novel, effective therapies continue to be approved for clinical use.
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Original Article
Spectrum of Abnormal Mammographic Findings and Their Predictive Value for Malignancy in Singaporean Women from a Population Screening Trial
While screening mammography can detect early breast cancers, a significant proportion of asymptomatic women are subject to unnecessary workup and surgery when biopsies for abnormal mammograms are proven to be benign on histology. An accurate correlation between abnormal mammographic features detected on screening and their corresponding histology or predictive...
Others
Hereditary Breast Cancer: A Brief Overview
Worldwide, breast cancer is the third most common form of cancer, after lung and stomach cancer, and it is the most common form among women.1 The age-adjusted incidence rates of breast cancer are 176% higher in developed than developing countries.
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Others
Update of Genetics in Colorectal Carcinomas: Genomic Instability and Somatic Evolution
The hypothesis that carcinogenesis occurs through stepwise accumulation of mutations1 has now been generally accepted. However, there is continual dispute over how carcinogenesis can be achieved over the lifetime of an individual.
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Others
Pseudomembranous Colitis in a Patient Treated with Paclitaxel for Carcinoma of the Breast: A Case Report
Paclitaxel was discovered in 1963 as a crude extract from the bark of the pacific yew Taxus brevifolia. Since its development, a range of anticancer activity has been demonstrated.
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Others
Early Hepatocellular Carcinoma Presenting with Biliary Ductal Invasion—A Case Report
Hepatocellular carcinoma (HCC) is a common malignant tumour worldwide. The local incidence of HCC is 40 per 100,000 in males and 20 per 100,000 in females.
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Others
Pathology of Ductal Carcinoma In situ of the Breast: A Heterogeneous Entity in Need of Greater Understanding
Breast cancer is the commonest malignancy in Singapore women, with an age-standardised rate of 46.1 per 100,000 per year and an annual increase in incidence of 3.68%. It comprises 22.8% of all local female cancers, with an annual mortality of 13.7 per 100,000 per year.
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Others
Two Cases of Medullary Thyroid Carcinoma
A 44-year-old Indian man was found to have a raised carcinoembryonic antigen (CEA) (49.5 μg/L) detected on routine medical examination in February 2000. His past medical history included asthma, chronic anal fissure and haemorrhoids, cervical spondylosis and mild hypercholesterolaemia.
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Others
The Need for Collaboration Between Clinicians and Statisticians: Some Experience and Examples
Many areas of medical research require the application of statistical techniques. Although most clinicians are taught some statistics as part of their basic medical training, the important role of statistics in medical research has led to many pharmaceutical companies, hospitals and medical research institutions employing full time statisticians to...
Others
Clinical Update on Occupational Asthma
Occupational asthma is the most common occupational respiratory disease in the United Kingdom and also in Singapore. Recent estimates of the proportion of adult asthmatics where the cause could be occupational range from 4% to 9%.
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Others
Introduction to Bayesian Methods for Medical Research
The traditional statistical approach used in most areas of medical research involves what is commonly known as frequentist statistics. Bayesian methods provide an increasingly popular alternative to frequentist approaches.
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Others
Clinical Update on Helicobacter pylori
Helicobacter pylori is one of the commonest infections in human, affecting 30% to 50% of people worldwide. It is associated with the development of peptic ulcer, chronic gastritis and gastric cancer and may play a role in a small subset of patients with non-ulcer dyspepsia.
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Others
Primary Anorectal Malignant Melanoma: Clinical Features and Results of Surgical Therapy in Singapore—A Case Series
Malignant melanoma arising from the anal canal was first described in 1857. It is uncommon, comprising only about 1% of all anal canal tumours.
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Others
A Case of Alpha-Fetoprotein-Producing Gastric Cancer
A 57-year-old accountant presented to her doctors in a neighbouring country in early October 1998 with problems of easy bruising, bleeding gums, one single episode of gross haematuria and 2 months of back pain. Investigations showed evidence of disseminated intravascular coagulation (DIVC) and compression fracture of T10 vertebra.
This article...
Others
Case Report: Acute Tumour Lysis Syndrome
Acute tumour lysis syndrome (ATLS) is one of the most urgent of all oncological treatment-related complications. It has a broad impact on organ dysfunction, the most important and life threatening complication being acute renal failure. Early implementation of preventive measures can have a drastic impact on reducing the associated...
Others
12th Chapter of Surgeons Lecture: Shifting Paradigms in the Management of Breast Cancer—A Surgical Perspective
The recorded history of breast cancer management spans four millennia. This story about breast cancer management is also one about change, about resistance to and acceptance of change.
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Review Article
CerbB2 Status in Breast Cancer: Pathologic Issues
The cerbB2 gene, also known as Her2/neu, encodes a transmembrane cell receptor with tyrosine kinase activity and epidermal growth factor receptor homology. All normal and the majority of breast cancer cells contain 2 copies of the cerbB2 gene and produce low levels of the corresponding protein.
This article is available...
Original Article
Cancer Incidence in Singapore, 1998 to 1999
The Singapore Cancer Registry has been monitoring the trends in cancer incidence since 1968. It publishes 5-yearly incidence figures for the periods 1968-1972, 1973-1977, 1978-1982, 1983-1987, 1988-1992 and 1993-1997.
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Others
Current Therapeutic Strategies for Type 2 Diabetes Mellitus
Type 2 diabetes mellitus is now recognised as a metabolic syndrome and although the treatment paradigm has shifted from one that focuses solely on glycaemic control to one addressing global cardiovascular risk factors in a particular individual, glycaemic control remains one of the key challenges that the physician faces...
Others
Update in the Management of Stroke
Stroke is the fourth leading cause of death and a leading cause of morbidity in Singapore. The number of hospital admissions for cerebrovascular disorders has been rising dramatically over the last few years, exceeding 10,400 in 2001.
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Original Article
Efficacy and Tolerability of Irinotecan in Patients with Advanced Colorectal Cancer in Singapore
Colorectal cancer is the second most commonly encountered malignancy in the developed countries; in Singapore, it is the commonest cancer. With early detection, patients can be cured with surgery.
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Others
Magnetic Resonance Arthrography of the Labral-Ligamentous Complex of the Shoulder: An Update
Shoulder instability is a frequently encountered clinical problem in young active people following injury, particularly in athletes. The labral-ligamentous complex is increasingly recognised as being an important structural component that contributes to shoulder instability.
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Original Article
Limited Magnetic Resonance Imaging (MRI) and the Occult Hip Fracture
Worldwide, in the past decade, the application of magnetic resonance imaging (MRI) has increased tremendously in the management of musculoskeletal trauma. Not least is its application as a valuable diagnostic tool in occult hip fracture evaluation.
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Original Article
The Mastectomy Clinical Pathway: What Has It Achieved?
In an era of increasing healthcare cost and scarce resources, the tension between the cost and quality of healthcare demands not only effective but also cost-efficient healthcare systems.
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Others
Agreement or Prediction: Asking and Answering the Right Question
In an article published in this journal, Chia discusses the difference between measuring association and agreement. In this paper, we extend the discussion to the difference, in terms of the concepts as well as the practical usage, between analysing agreement and prediction.
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Others
Age-related Macular Degeneration: What’s New
Age-related macular degeneration (AMD) is the leading cause of irreversible blindness in the developed western world, accounting for approximately 50% of all cases of registered blindness. The prevalence of AMD seems to be increasing at a rate not commensurate with the increasing age of the population, although this observation...
Original Article
Preliminary Experience in Radionuclide Therapy of Hepatocellular Carcinoma Using Hepatic Intra-arterial Radio-conjugates
Hepatocellular carcinoma (HCC) is a common malignancy worldwide. In Singapore, the age-standardised incidence rate is 18.9 per 100,000 per year.
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Others
Management of Premalignant Lesions of the Cervix
Cervical cancer is one of the most common female cancers worldwide. It is ranked second only to breast cancer and in many underdeveloped countries, it is the most common female cancer.
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Others
Clinical Update on Managing the Obstructed Airway
Maintaining a patent upper airway is the first principle in resuscitation and acute care. This is usually carried out by anaesthesiologists, emergency medicine physicians and intensivists.
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Others
Clinical Update on Deep Vein Thrombosis in Singapore
Deep vein thrombosis (DVT), and its acute complication–pulmonary embolism (PE), is one of the most important preventable causes of death in hospital patients. It also contributes to significant morbidity in terms of post-phleblitic syndrome and chronic venous ulcers.
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Original Article
Paediatric Extracranial Germ Cell Tumours: A Retrospective Review
Germ cell tumours (GCTs) in children account for 2% to 3% of childhood malignancies. They arise from primordial germ cells and constitute a heterogeneous group of tumours.
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Original Article
Technetium-99m Methoxyisobutylisonitrile Imaging in the Follow-up of Differentiated Thyroid Carcinoma
Differentiated thyroid carcinoma (DTC) is not an uncommon tumour in Thailand.1 A high percentage of 10-year survival results in long-term follow-up. I-131 total-body scan (I-131 TBS) is commonly used for monitoring the disease after surgery and radioiodine ablation in most centres.
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Letter to the Editor
Re: 188Rhenium-TDD-Lipiodol in Treatment of Inoperable Primary Hepatocellular Carcinoma—A Case Report
Hepatocellular carcinoma (HCC) is a common malignancy that is best treated by surgery. However, in the vast majority, surgery is not possible and alternative treatment options have to be attempted.
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Others
Bronchopulmonary Dysplasia and Chronic Lung Disease of Infancy: Strategies for Prevention and Management
Bronchopulmonary dysplasia (BPD) and chronic lung disease of infancy (CLD) are two chronic pulmonary conditions which are the result of incomplete resolution or abnormal repair of lung injury in the neonatal period. Although BPD and CLD are closely related, they have differing diagnostic criteria and the spectrum of severity...
Others
Embolisation of a Renal Artery Pseudoaneurysm in a Patient with Renal Malrotation and Chronic Aortic Dissection
A 40-year-old Chinese male presented with severe right loin pain. He had a history of chronic abdominal aortic dissection of unknown aetiology. He was not hypertensive and there was no evidence of ankylosing spondylitis, Ehlers-Danlos syndrome or any connective tissue disorder.
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Original Article
Single Centre Review of Radiologically-guided Percutaneous Nephrostomies: A Report of 273 Procedures
Percutaneous nephrostomy (PCN) is a well-established technique in the armamentarium of an interventional radiologist when dealing with urinary obstruction. It provides temporary relief in obstructive uropathy and stabilises the patients for subsequent definitive treatment.
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Others
Clinical Update on Osteoporosis
Fractures, the most serious complication of osteoporosis, are increasing and constitute an evolving public health problem in terms of disability, mortality and cost. A paradigm shift in the management of osteoporosis has resulted from the development of techniques which can diagnose osteoporosis before fractures occur, and effective medications which...
Original Article
To Establish the Normal Bone Mineral Density Reference Database for the Singapore Male
Bone mineral densitometry was developed as a means to quantify the bone mineral content of the skeleton accurately and has been used in the diagnosis of osteopenia and osteoporosis. Dual-energy X-ray absorptiometry (DXA) of the axial skeleton is one such technique2 which is based on a subtraction method.
This article...
Original Article
Percutaneous Vertebroplasty in the Management of Osteoporotic Vertebral Compression Fractures: Initial Experience
With the general increase in life expectancy in the local population, the incidence of osteoporosis is anticipated to rise as well. Even with screening modalities such as bone mineral densitometry and preventive treatment such as hormone replacement therapy, many patients are asymptomatic and are diagnosed with osteoporosis only after...
Original Article
Differentiation of Malignant Vertebral Collapse from Osteoporotic and Other Benign Causes Using Magnetic Resonance Imaging
An elderly patient presenting with backache and vertebral collapse on plain X-ray is a common clinical scenario and a diagnostic challenge. It is difficult to differentiate between benign and malignant causes for the vertebral collapse.
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Letter to the Editor
Letter to the Editor
We would like to draw the attention of your readers to the comments made in the editorial of the recent Imaging issue of your journal.
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Others
The Combined Oral Contraceptive Pill in Women Over Age Forty
In the 1970s, several studies appeared to suggest that users of oral contraceptives (OCs) were at increased risk of cardiovascular events. More recently following newer studies on lower dose OCs and re-analysis of the old studies, it was concluded that the risk of cardiovascular accidents was attributable primarily to...
Others
Contemporary Management of Fibroids
Fibroids are the most common, solid benign pelvic tumours occurring in about 30% of women beyond the age of 30. They are asymptomatic in most women.
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Others
Investigating the Infertile Couple
Infertility is defined as the inability to conceive after 1 to 2 years of unprotected intercourse. In general, an estimated 84% of all women would conceive after a year of intercourse.
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Others
Use of Hormone Replacement Therapy in the Asymptomatic Postmenopausal Woman: What is the Current Evidence?
The understanding of hormone replacement therapy (HRT) for postmenopausal women has undergone dramatic change since the publication of the results of the Women’s Health Initiative (WHI) study in July 2002.
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Others
Fetal Cells in Maternal Blood: State of the Art for Non-Invasive Prenatal Diagnosis
Without prenatal diagnosis, 1 in 50 babies are born with serious physical or mental handicap, and as many as 1 in 30 with some form of congenital malformation. These may be due to structural or chromosomal abnormalities, or single gene disorders.
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Others
Human Papillomavirus Triage of Patients with Atypical Squamous Cells of Undetermined Significance on Cervical Papanicolaou Smear
Cervical cancer affects >400,000 women a year worldwide, and represents a significant health issue for women. In the United States (US) however, screening programmes have reduced the incidence to 8.3 cases per 100,000 women with only 14,000 cases and 5000 deaths annually.
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Others
Screening for Chromosomal Anomalies: First or Second Trimester, Biochemical or Ultrasound?
A chromosome abnormality contributes significantly to fetal loss during pregnancy, and perinatal morbidity and mortality. The contribution of chromosomal abnormalities to fetal loss decreases as pregnancy progresses; an estimated 50% of first-trimester spontaneous abortions are due to chromosomal abnormalities.
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Others
Should Doctors Perform an Elective Caesarean Section on Request?
Caesarean sections performed without medical indication, better known as maternal request caesarean sections, have generated intense debate in recent times. While uncommon in the past, a recent national audit in the United Kingdom (UK)1 revealed that 7% of all elective caesarean sections were performed for precisely this reason.
This article...
Others
Imaging-guided Bone Biopsy
Biopsy may be performed at surgery (open biopsy) or percutaneously (closed biopsy). Percutaneous bone biopsies are usually performed under imaging guidance using a variety of modalities, such as fluoroscopy1 and computed tomography (CT), and less commonly, ultrasonography (US) and magnetic resonance (MR) imaging.
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Others
Intracerebral Schwannoma—A Rare Cause of Epilepsy
Schwannomas are extra-axial neoplasms derived from the nerve sheath of peripheral or cranial nerves. They represent approximately 8% of all intracranial tumours, arising predominantly from the vestibular nerve.
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Others
Radiographic Features of a Case of Severe Acute Respiratory Syndrome with Fatal Outcome
Severe acute respiratory syndrome (SARS) is an atypical pneumonia that was first reported in early 2003. Reports of outbreaks of cases rapidly appeared in Hong Kong, Vietnam, China and Singapore.
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Others
Clinical Applications of MR Cholangiopancreatography
Magnetic resonance cholangiopancreatography (MRCP) has attracted a lot of interest from clinicians because it is a non-invasive method of obtaining a cholangiographic image without the morbidity that is associated with endoscopic retrograde cholangiopancreatography (ERCP).
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Others
Imaging of Paediatric Mediastinal Masses
A review of mediastinal masses in children, emphasising imaging features, is important for several reasons. Firstly, the mediastinum is the most common location for thoracic masses in children.
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Review Article
Radionuclide Therapy of Hepatocellular Carcinoma
Hepatocellular carcinoma (HCC) is a common malignancy worldwide. It is a major cause of death from cancer in East Asia, especially China, Japan, Korea, Taiwan and Singapore, and sub-Saharan Africa, particularly Zimbabwe, Ethiopia and Mozambique.
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Review Article
Clinical Positron Emission Tomography Imaging—Current Applications
Like other radionuclide techniques, positron emission tomography (PET) is based on the tracer principle – a small amount of labelled ligand is used to trace the metabolic pathway of an important chemical in the cell. PET complements anatomic imaging by its ability to map function or metabolism.
This article is...
Review Article
MR Imaging and MR Spectroscopy of Adenocarcinoma of the Prostate
Prostate cancer is usually suspected due to an abnormal digital rectal examination, elevated serum prostate specific antigen (PSA) level or both. The diagnosis of prostate cancer depends on histopathologic examination of tissue obtained from systematic sextant core needle biopsy under transrectal ultrasound guidance.
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Review Article
Imaging of Congenital Middle Ear Deafness
When a child or young adult with morphologically normal external ears and no previous history of ear discharge or trauma presents with conductive hearing deficit, a congenital middle ear anomaly should be sought. Although fenestral otosclerosis is a differential diagnosis, the early onset of symptoms and a lack of...
Review Article
MR Imaging of the Fetal Brain and Spine: A Maturing Technology
The introduction of a new diagnostic test into a clinical arena goes through a number of stages. The first stage is technical development.
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Review Article
Imaging of Acquired Immunodeficiency Syndrome (AIDS)
The pandemic of human immunodeficiency virus (HIV)/acquired immunodeficiency syndrome (AIDS) is a global healthcare problem and HIV infection is the most common cause of death worldwide. There are now 60 million deaths recorded from the infection worldwide by the United Nations AIDS (UNAIDS) organisation, most of them in sub-Saharan...
Review Article
The Singapore National Breast Screening Programme: Principles and Implementation
In January 2002, the first population-based national mammographic breast screening programme in Asia, the Singapore National Breast Screening Programme (BreastScreen Singapore), was launched. The programme aims to achieve international standards of breast screening practice and breast cancer detection, as well as to reduce or stabilise the mortality from breast...
Original Article
Brachiocephalic-Superior Vena Cava Metallic Stenting in Malignant Superior Vena Cava Obstruction
A large majority of superior vena cava (SVC) syndrome is caused by malignancy (74% to 95%). This can either be due to direct SVC invasion or secondary to extrinsic compression.
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Original Article
Pilot Study Using Technetium-99m Pertechnetate Sequential Radionuclide-Sialography to Assess Salivary Gland Function in Nasopharyngeal Cancer Patients on Radiation Therapy
Nasopharyngeal carcinoma (NPC) is an epithelial malignancy occurring worldwide with particularly high frequencies in the Far East. The incidence is highest in Hong Kong followed by Singaporean Chinese.
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Original Article
Breath-hold Fast Recovery Fast Spin Echo versus Conventional Non-Breath-hold Fast Spin Echo T2-Weighted MR Imaging of Focal Liver Lesions
T2-weighted magnetic resonance (MR) imaging is an important sequence for characterisation of focal liver lesion. Accurate characterisation of benign lesions, such as haemangioma or cyst, is important to prevent unnecessary procedure or surgery.
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Original Article
Diffusion-weighted MR Imaging in Intracranial Infections
Diffusion-weighted magnetic resonance (MR) imaging (DWMRI) is becoming essential to the assessment of acute cerebral infarction and has also been applied to distinguish cerebral abscess from necrotic intracranial neoplasm. There have also been a few case reports on DWMRI of encephalitis.
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Original Article
Preoperative High Resolution CT and MR Imaging in Cochlear Implantation
Candidates for cochlear implantation undergo a thorough audiological and medical assessment. The audiological assessment is done to ensure that these candidates who have bilateral profound or severe hearing loss have been given adequate hearing amplification, but show no significant benefit.
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Original Article
Non-consensual Double Reading in the Singapore Breast Screening Project: Benefits and Limitations
Double reading of mammogram is not the standard practice in the United Kingdom National Health Service Breast Screening Programme (NHSBSP). Rather, single reading of the mammogram remains the basic policy, as was recommended in the Forrest report.
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Original Article
Breast Cancer in Women Under 40 Years: Preoperative Detection by Mammography
The incidence of breast cancer peaks between the ages of 45 and 55 years. Approximately 7% of breast cancers occur below 40 years of age.
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Editorial
The Past Decade of Diagnostic Radiology in Singapore: How Much Progress Have We Really Made?
It has been 10 years since the first ever issue of Annals dedicated to “Radiology” was published in Volume 22 No. 5 September 1993. Keeping in mind the tremendous growth in the development and applications of Imaging for both Diagnosis and Intervention, this second theme issue is long overdue.
This...
Original Article
Measuring Quality of Life in Chinese Cancer Patients: A New Version of the Functional Living Index for Cancer (Chinese)
Health-related quality of life (QOL) is recognised as an important aspect of patient care. In oncology studies, it may stand as the primary end-point. Most QOL instruments are developed in English, although about one-fifth of the world’s population is ethnic Chinese.
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Others
The Use and Abuse of Steroids in Perinatal Medicine
Preterm birth, delivery prior to 37 weeks of gestational age, accounts for a major and disproportionate amount of infant and neonatal morbidity and mortality. Despite advances in medical technology, the prevalence of preterm birth in Singapore has increased, secondary to an increase in multiple gestations and obstetric interventions.
This article...
Review Article
The Molecular Biology of Peritoneal Carcinomatosis from Gastrointestinal Cancer
The term “peritoneal carcinomatosis” was first used by Sampson in 1931 to describe the intra-abdominal spread of ovarian carcinoma. Although ovarian cancers account for the majority of cases, peritoneal carcinomatosis is also frequently associated with gastrointestinal malignancies.
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Review Article
Colorectal Hepatic Metastases: Role of Radiofrequency Ablation
Colorectal cancer is the second most common cancer in Singapore, accounting for 15.9% of all cancers registered with the Singapore Cancer Registry in the years between 1993 and 1997. Despite recent advances in surgery, radiotherapy and chemotherapy, more than half of those afflicted will die from their cancer.
This article...
Review Article
Neoadjuvant Chemotherapy in the Management of Colorectal Metastases: A Review of the Literature
Colorectal cancer accounts for the most number of deaths after lung cancer, both in the West as well as locally in Singapore. Liver is the most common site of metastasis in colorectal cancer; an estimated 15% of patients will present synchronously, whilst approximately 50% will develop hepatic secondaries at...
Original Article
Hepatic Resection for Colorectal Metastases to the Liver: The National Cancer Centre/Singapore General Hospital Experience
Colorectal carcinoma is the fourth most common malignancy and the second leading cause of death worldwide. Although surgical resection in combination with adjuvant chemotherapy in certain cases provide curative treatment, more than 50% will develop metastases in the course of their disease.
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Original Article
Computed Tomographic Appearance of Colorectal Hepatic Metastases
It is important to recognise the computed tomography (CT) appearance of hepatic metastases from colorectal primaries, as resection in a selected group may offer a 20% to 40% rate of five-year survival compared to 5% to 10% with non-surgical management.
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Review Article
Current Status in Imaging of Colorectal Liver Metastases
Colorectal cancer is a common primary that metastasizes to the liver. About 20% of patients with colorectal cancer will have detectable metastases at the time of clinical presentation, with an additional 30% developing clinical evidence of hepatic disease within 24 months.
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Review Article
Current Concepts of Tumour Metastasis
Tumour metastasis, or the spread of cancer cells from a primary tumour to distant sites, remains the principal cause of treatment failure and poor prognosis in patients with cancer. Early metastasis concepts were based upon the premise of uninterrupted tumour growth, stepwise spread of tumour cells with the inevitable...
Review Article
Chemoprevention of Colorectal Cancer – Experimental Approach and Clinical Applications
The age-old adage of “Prevention is Better than Cure” is still very relevant in today’s practice of medicine. Many randomised population trials have already shown that colorectal cancer mortality is reducible through early detection and screening.
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Review Article
Practical Issues in Adjuvant Therapy for Rectal Cancer
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Review Article
Total Mesorectal Excision (TME) – Twenty Years On
In 1982, Heald et al1 at the Basingstoke District General Hospital introduced the concept of total mesorectal excision (TME) as a means of performing optimal tumour clearance for patients with rectal cancer. Five cases were described where minute foci of adenocarcinoma was demonstrated in the mesorectum several centimetres distal...
Original Article
Flat and Depressed Lesions of the Colon and Rectum: Pathogenesis and Clinical Management
It was previously thought that the vast majority of colorectal cancers were derived from polypoid adenomas. However, several investigators have noted that most colorectal cancers which developed from flat or depressed neoplastic lesions remained undetectable by conventional colonoscopy.
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Others
Surgical Management of Colorectal Metastases to the Liver
Colorectal carcinoma is the second commonest cancer in both males and females in Singapore, accounting for about 15% of all cancer cases. The liver is the most common site of distant metastases from colorectal cancer.
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Editorial
Recent Advances in the Total Management of Colorectal Cancer
Considerable improvements in the survival and outcome of colorectal carcinoma have been made in recent years. These have been the result of advances in investigations, intervention as well as in follow-up management.
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Others
The Diagnosis and Management of Hypercalcaemia
Hypercalcaemia is a relatively common clinical problem with the widespread use of routine biochemical screening. Population studies have suggested a prevalence of 3% in women and <1% in men above the age of 60 years.
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Others
Routine Abdominal and Pelvic Ultrasound Examinations: An Audit Comparing Radiographers and Radiologists
Since its introduction into clinical practice in the early 1970s, ultrasound (US) has become firmly established as an extremely valuable imaging modality and widely used to the extent that abdominal US is the second most commonly performed imaging study (after chest radiography). Our department has also experienced a steady...
Others
Unusual Case of Bowel Infarction with Invasive Aspergillus in an Immunocompromised Patient
The role of neoadjuvant chemotherapy for locally advanced breast cancer has been established and there has been a growing interest in its role in early and operable breast cancer.1 Most neoadjuvant chemotherapeutic regimes contain an anthracycline and are usually combined with cyclophosphamide, with or without 5-fluorouracil.
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Original Article
Clinical Utility of Selective Intra-arterial Calcium-stimulated Hepatic Venous Sampling in Regionalisation of Insulinomas—The Singapore Experience
Insulinomas are small tumours with dimensions that seldom exceed 2.0 cm in diameter. Preoperative non-invasive localisation using trans-abdominal ultrasound and conventional computed tomography (CT) detect only between 25% and 60% of insulinomas.
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Others
Reflections of a Septuagenarian – Radiology: Past, Present and Future
Before I commence, I would like to thank the Singapore Radiological Society and the Chapter of Radiologists of the Academy of Medicine for inviting me to speak today on the occasion of the inauguration of the FY Khoo Lectureship. I was initially hesitant.
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Others
Imaging Findings in Acute Neck Infection due to Pyriform Sinus Fistula
Pyriform sinus fistula is a developmental abnormality of the 3rd or 4th branchial pouch. It usually presents in childhood as acute inflammatory swelling of the neck and frequently involves the thyroid gland.
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Original Article
Audit of Diagnostic and Interventional Craniocervical Catheter Angiographic Procedures at the Singapore General Hospital
Catheter angiography has long been considered the diagnostic standard by which the accuracy of other vascular imaging modalities are compared, given its superior contrast and spatial resolution, as well its high selectivity and ability to show the full extent of vascular disease, presence of contralateral disease, patterns of collateral...
Original Article
Breast Ultrasound in Women With Familial Risk of Breast Cancer
Mammography is the modality of choice to screen for breast cancer in asymptomatic women. However, it is known that about 10% to 12% of breast cancers are mammographically occult.
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Original Article
The HercepTest and Routine C-erbB2 Immunohistochemistry in Breast Cancer: Any Difference?
The proto-oncogene c-erbB2 (also known as HER2/neu) is located on chromosome 17q21 and encodes a 185-kD transmembrane glycoprotein. It belongs to the human epidermal growth factor receptor (tyrosine kinase receptor) family that plays an important role in the regulation of fundamental processes such as cell growth, survival and differentiation.
This...
Review Article
Coronary Artery Disease: Comprehensive Evaluation by Cardiovascular Magnetic Resonance Imaging
Coronary artery disease (CAD) is a major health problem worldwide. With advances in CAD intervention and improvements in treatment and management of CAD, there has been a dramatic increase in the survival rate of patients.
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Others
A Case of Right Loin Pain: Septic Ovarian Vein Thrombosis Due to Campylobacter fetus Bacteraemia
Septic ovarian venous thrombosis is an uncommon entity. Classically, it occurs as a postpartum complication with reported frequency of 1 in 600 to 2000 deliveries.
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Others
A Case of Metastatic Squamous Cell Carcinoma of the Hypopharynx Manifesting as Acute Abdomen
T, a 23-year-old female, was previously well until November 2000 when she presented with 1-year history of sore throat associated with neck lumps for 2 months. Clinically, she had left cervical lymphadenopathy measuring 3 cm.
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Others
A Case of Maffucci’s Syndrome With Pleural Effusion: Ten-year Follow-up
A 23-year-old male patient was admitted to Ataturk Chest Disease Hospital with non-productive cough, dyspnoea, chest pain and back pain. These complaints had begun 15 days before he was admitted.
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Others
Clinical Indications for Positron Emission Tomography (PET) Scanning
The purpose of these guidelines is to provide a broad framework for clinicians considering the use of positron emission tomography (PET) scanning for their patients. PET imaging is a rapidly evolving field, with ongoing developments in imaging technology, radiochemistry, isotope production, animal research and clinical applications.
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Original Article
Semi-Quantitative Measurements of Normal Organs With Variable Metabolic Activity on FDG PET Imaging
Positron emission tomography (PET) has a proven clinical role in oncology, cardiology and neurology that primarily uses 2-deoxy-2--fluoro-deoxyglucose (FDG). FDG is an analogue of glucose that mimics the cellular uptake and initial metabolism of glucose, which enables cells utilising excess glucose to be visualised. Increased glucose metabolism is commonly...
Review Article
Clinical Applications of Positron Emission Tomography in Cardiology: A Review
Ischaemic heart disease associated with depressed left ventricular function is a common clinical management dilemma. There is overwhelming evidence that such patients have a poor prognosis when treated medically.
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Review Article
The Role of FDG-PET in the Management of Non-small Cell Lung Carcinoma
Carcinoma of the lung is the leading cause of cancer death in both men and women and is the second most common malignancy in both men and women. In 2003, it is estimated that there will be 171,900 new cases of lung carcinoma diagnosed in the United States and...
Review Article
Clinical PET Imaging – An Asian Perspective
Positron emission tomography (PET) is distinct from other imaging modalities in its ability to probe the physiology and biochemistry of normal and abnormal tissues. It is based on the same principle of tracer kinetics used in conventional nuclear medicine.
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Review Article
PET Tracers and Radiochemistry
Positron emission tomography (PET) has become a powerful scientific and clinical tool for probing biochemical processes in the human body. This is due, in large part, to advances in instrumentation and synthetic chemistry.
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Review Article
Physical Principles and Technology of Clinical PET Imaging
The past few years have seen the transition of positron emission tomography (PET) from the research domain into mainstream clinical applications for oncology. The emergence of PET as the functional imaging modality of choice for diagnosis, staging, therapy monitoring and assessment of recurrence in cancer has led to an...
Editorial
Positron Emission Tomography – A Vital Component of Molecular Imaging
Contemporary medical imaging is progressing towards quantification of tissue function in addition to merely providing anatomical information, as illustrated by the rising use of such modalities as functional magnetic resonance imaging (fMRI), magnetic resonance spectroscopy (MRS) and positron emission tomography (PET). As far back as 1951, positron-emitting radiotracers have...
Others
Two Case Reports of Metastases from Colon Carcinoma to the Thyroid
Metastases to the thyroid are not as rare as previously believed and have been shown, in autopsy series, to be more common than primary thyroid malignancy. The overall incidence, not surprisingly, varies from 1.25% in unselected patient autopsy series to 24% in autopsy of patients with widespread malignant neoplasms.
This...
Original Article
Trends in Cancer Incidence Among Singapore Malays: A Low-risk Population
Cancer is now one of the most common causes of death in the world. Inspection of changes in cancer incidence in ethnically or geographically diverse populations is important for the understanding of cancer patterns and also to provide clues for aetiologic studies.
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Others
Is it Possible to Slow the Progression of Myopia?
The rates of myopia, including high myopia , have been reported to be rising to epidemic proportions in Asia and solutions to this huge public health problem are urgently needed. Many researchers agree that myopia is not determined solely by genes and that environment may play a huge role.
This...
Original Article
Use of D-dimer and Lower Extremity Doppler Ultrasound Results to Obviate the Need for Computerised Tomographic Pulmonary Angiography
The diagnosis of pulmonary embolism (PE) can be a challenging problem. It depends on clinical suspicion and the interpretation of a combination of clinical and radiological presentations.
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Original Article
Image-guided Radiofrequency Ablation of Liver Malignancies: Experience at Singapore General Hospital
Radiofrequency (RF) ablation for the treatment of focal liver malignancies is a relatively new image-guided procedure that is gaining increasing acceptance in the radiologic and surgical community, particularly as an alternative treatment option for patients who have inoperable tumours. The potential benefits of minimally invasive image-guided ablation, as compared...
Original Article
Detection and Quantification of the Abelson Tyrosine Kinase Domains of the bcr-abl Gene Translocation in Chronic Myeloid Leukaemia Using Genomic Quantitative Real-time Polymerase Chain Reaction
Chronic myeloid leukaemia (CML) is a clonal stem cell malignancy characterised by massive proliferation of mature and immature granulocytes, basophils and spleen cells, but not cells of T cell lineage. The molecular hallmark of CML is the reciprocal translocation between chromosomes 9 and 22, t(9;22), which produces the Philadelphia...
Editorial
Building Collaboration in Cardiac Imaging
Publicity about new developments in medical technology is not at all unusual. But the degree with which multi-slice computed tomography (MSCT) for coronary artery disease (CAD) detection has captured the imagination of the public appears exceptional.
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Review Article
The Feminist Approach in the Decision-making Process for Treatment of Women With Breast Cancer
The ethical theories employed in healthcare today generally assume a modern Western philosophical framework, which is applied to many issues such as abortion, euthanasia, consent for treatment and organ transplantation. The application of this approach to non-Western cultures needs critical examination.
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Others
3rd FY Khoo Memorial Lecture – Education, Professionalism, Outsourcing and the Future of Radiology
Radiology is undergoing unprecedented changes. Not only is the technology evolving rapidly, providing images of breathtaking anatomical clarity, but functional information has also become a reality.
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Review Article
Singapore National Medical Image Resource Centre (SN.MIRC): A World Wide Web Resource for Radiology Education
Radiological images are critical for diagnosis, teaching and research. In radiology education, learners must be exposed to large amounts of visual information, and assimilation of these medical images is essential in the training of diagnostic skills.
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Review Article
Teleradiology in Singapore – Taking Stock and Looking Ahead
Teleradiology is the electronic transmission of radiologic images from one location to another for the purposes of interpretation and/or consultation. The current interest in teleradiology is fuelled mainly by rapid technological advances, a worldwide shortage of radiologists, and cost considerations in developed countries.
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Original Article
Radiographic Features of SARS in Paediatric Patients: A Review of Cases in Singapore
Severe acute respiratory syndrome (SARS) is a newly emerged atypical pneumonia caused by the SARS-associated coronavirus (SARS-CoV). It is easily transmitted via droplet infection from close contact.
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Others
Postirradiation Sarcoma of the Sphenoid Bone – A Case Report
Radiation-associated tumours of the temporal and maxillary bone have been reported in patients treated with radiotherapy for nasopharyngeal carcinoma. There was no previously reported case of postirradiation sarcoma of the sphenoid bone after radiation therapy for nasopharyngeal carcinoma.
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Others
A Case of Cystic Schwannoma of the Lesser Sac
Schwannoma or neurilemmoma (NL) is a well-defined, usually benign, tumour arising from the nerve sheath (Schwann cell). It may present as a solitary mass in any part of the body, but is more commonly seen in the head and neck, the extremities and on the trunk.
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Original Article
Phase II Trial of Gemcitabine and Cisplatin Sequentially Administered in Asian Patients With Unresectable or Metastatic Non-small Cell Lung Cancer
Lung cancer is the most common cause of cancer-related death worldwide. It ranks first among males and third among females in the incidence of cancers in Singapore.
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Images in Medicine
Putting Together Lesions in the Brain, Retina, Kidney and Pancreas
A 40-year-old Malay lady presented with a 6-month history of headache. She had a past history of a left nephrectomy 6 years ago.
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Letter to the Editor
Tuberculosis Masquerading as Recurrent Metastatic Carcinoma of the Cervix
The incidences of certain malignancies are increasing and are major causes of mortality. Diagnosis can be difficult and delayed.
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Review Article
Association of Epstein-Barr Virus with Nasopharyngeal Carcinoma and Current Status of Development of Cancer-derived Cell Lines
Although nasopharyngeal carcinoma (NPC) has been reported in almost all parts of the world, most cases of NPC are found in South East Asia, Southern China (including Hong Kong), North Africa and in the Eskimo population of Alaska, USA. For reasons that still remain unclear, the Chinese are more...
Letter to the Editor
Massive Retroperitoneal Adrenal Haemorrhage as the First Manifestation of a Lung Cancer
A 74-year-old man was admitted with sudden onset of right upper quadrant abdominal pain radiating towards right shoulder and right thigh. Pain was aggravated by deep breathing and movements.
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Others
4th FY Khoo Memorial Lecture 2008: Nasopharyngeal Cancer Workgroup – The Past, The Present and The Future
Thank you Madam Chairman. First, I would like to thank the Singapore Radiological Society and the College of Radiologists, Academy of Medicine Singapore for giving me the honor of delivering this the 4th FY Khoo Memorial Lecture, 2008.
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Original Article
Phase II Trial of Gemcitabine in Combination with Cisplatin in Inoperable or Advanced Hepatocellular Carcinoma
Hepatocellular carcinoma (HCC) has a high incidence rate in Asia. In Singapore, it is the third most common cancer amongst males, and constituted 8% of all cancers diagnosed between 1998 and 2002.
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Letter to the Editor
Pancreas-only Metastasis from Nasopharyngeal Carcinoma
A 51-year-old Chinese man presented with a 3 month’s history of left cervical lymphadenopathy, rhinorrhoea, tinnitus and nasal congestion. On nasopharyngoscopy, a fungating mass was found in his nasopharynx and was biopsied.
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Original Article
Induction Concurrent Chemoradiotherapy Using Paclitaxel and Carboplatin Combination Followed by Surgery in Locoregionally Advanced Non-Small Cell Lung Cancer – Asian Experience
Lung cancer is the leading cause of cancer mortality in Singapore. The age standardised incidence rate is 45 per 100,000/year.
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Others
Magnetic Resonance Imaging of Sports Injuries of the Knee
Sports-related knee injuries are common, with contact sports and sports involving twisting movements being the most frequent causes. Sports injuries may affect any of the knee structures, including ligaments, menisci, bones, cartilage and periarticular soft tissues.
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Letter to the Editor
Successful Surgical Treatment of Renal Cell Carcinoma With Calvarial Metastases
Renal cell cancer (RCC) accounts for 3% of all cancers. Isolated haematuria or pain is the most common form of presentation.
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Original Article
The Toxicity and Outcomes of Continuous 5-fluorouracil/Cisplatin-based Chemotherapy Followed by Chemoradiation in Patients with Resected High-risk Gastric Cancer: Results of a Single Institute
Gastric carcinoma is the second most common cause of cancer mortality worldwide. Surgery is the only curative therapy, although 5-year survival rates remain poor even after curative resection.
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Original Article
Local Experience of Endorectal Magnetic Resonance Imaging of Prostate with Correlation to Radical Prostatectomy Specimens
Prostate cancer ranks among the top 10 cancers in Singapore. The incidence of prostate cancer has risen by 5% to 118% in most Asian countries.
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Original Article
MMP-2, TIMP-2 and CD44v6 Expression in Non-small-cell Lung Carcinomas
Studies have provided data that matrix metalloproteinases (MMPs) facilitate tumour invasion, the establishment of metastases. On the other hand, matrix metalloproteinase inhibitors have been shown to inhibit tumour growth and dissemination in non-small-cell lung carcinomas (NSCLCs).
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Original Article
Noninvasive follicular thyroid neoplasm with papillary-like nuclear features and the risk of malignancy in thyroid cytology: Data from Singapore
As only 5–10% of thyroid nodules harbour malignancy, fine-needle aspiration (FNA) is important in triaging nodules requiring surgical excision from nodules that may be observed.1,2 This approach allows risk stratification that can reduce the rate of benign lesion removal by diagnostic lobectomies3 and its associated postoperative morbidity.4 However, thyroid...
Original Article
Characteristics of unplanned hospitalisations among cancer patients in Singapore
Cancer is a pervasive global problem with growing healthcare utilisation and costs.1-3 This situation is similar in Singapore where cancer incidence is on the rise and accounts for nearly 30% of total population mortality.4,5 Singapore data suggests that cancer patients accounted for 13% of total healthcare costs in 2016,...
Editorial
The case for better hospitalisation selection in cancer patients
Public hospital occupancy rates and resource utilisation in Singapore are perennially high. In the last 2 years of the COVID-19 pandemic, there has been a significant strain on public healthcare systems to balance the demands of the pandemic and usual medical care.
There is little literature detailing emergency department (ED)...
Review Article
Imaging of Nasopharyngeal Carcinoma
Nasopharyngeal cancer (NPC) is considered an Asian disease, particularly in the southern Chinese population; the incidence in Guangzhou is quoted to be up to 800 cases per million people.1 It is rare in the rest of the world, although NPC has spread to other areas of the world due...
Original Article
Retinoblastoma: A Recent Experience at the National University Hospital, Singapore
Retinoblastoma is the most common primary intraocular malignancy in infants and children.1 Worldwide, the incidence is 1 in 18,000 to 34,000 live births with an estimation of 5000 to 8000 new cases.2,3 The Singapore Childhood Cancer Registry (SCCR), a hospital based cancer registry that includes all children less than...
Original Article
Outcomes of Oral Tongue Cancer: Does Age Matter?
Oral cancer (including oral cavity and oropharynx) is the eighth most common cancer worldwide with oral cavity cancer among the 3 most common malignancies in south central Asia. Oral cavity cancer, including oral tongue, is associated with a relatively high mortality rate particularly in the developing countries.
This article is...
Letter to the Editor
Medical Misadventure: Barium Extravasation in Colorectal Cancer
Double contrast barium enema (DCBE) is a safe and accurate diagnostic procedure for colorectal cancer. It is often the next diagnostic test after incomplete colonoscopy, with an additional diagnostic yield of 3.2% for neoplastic lesions larger than 1 cm in the non-visualised portion of the colon.
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Letter to the Editor
Durian Seed Masquerading as Gallstone Ileus on Computed Tomography
Bezoars and gallstones are unusual causes of small bowel obstruction, with well-described imaging features on CT. We present a case of intestinal obstruction caused by a laminated mass in the terminal ileum that resembled a gallstone on CT, but was surgically proven to be a durian seed phytobezoar.
This article...
Original Article
A Survey of Local Preclinical and Clinical Medical Students’ Attitudes towards Radiology
Radiology is not a popular specialty for undergraduate student electives or postgraduate training amongst students from a local undergraduate medical school which is based in Southeast Asia. During the last 2 years (2007 & 2008), none of our elective students came from the local undergraduate medical school. During the...
Letter to the Editor
Primary Epithelioid Angiosarcoma of the Lung Presenting as Left-sided Shoulder Pain
Primary angiosarcoma of the lung is a rare, often difficult to diagnose disorder with non-specific respiratory manifestations. Angiosarcoma involving the lung is usually a result of metastatic disease.
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Original Article
Surgical Metastasectomy in AJCC Stage IV M1c Melanoma Patients with Gastrointestinal and Liver Metastases
The prognosis of patients with stage IV melanoma or recurrent melanoma is poor with an estimated median survival period of 6 months. The recent revised version of the American Joint Committee on Cancer (AJCC) staging system for cutaneous melanoma has further sub-divided melanoma metastatic sites to 3 specific categories;...
Letter to the Editor
Coexistence of Unicentric Castleman’s Disease and Locally Advanced Papillary Renal Cell Carcinoma: More Than a Coincidental Association?
Castleman’s disease (CD) is an enigmatic lymphoproliferative disorder due to its rarity, uncertain aetiopathogenesis and heterogeneous clinicopathologic forms. This case report presents an unusual case of concomitant hyaline-vascular type CD of unicentric retroperitoneal localisation and stage IV (T2N2M0) papillary renal cell carcinoma (RCC).
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Letter to the Editor
Macronodular Tuberculosis: Imaging Resemblance of Cholangiocarcinoma
The ability of multiphasic computed tomography (CT) and magnetic resonance (MR) studies in the diagnosis of liver tumours such as hepatocellular carcinoma and cholangiocarcinoma is well established. Nevertheless, potential mimics of malignant tumours abound. Hepatic tuberculosis presenting as hepatic mass is rare and preoperative diagnosis is usually difficult without...
Letter to the Editor
Management of Thrombotic Thrombocytopenic Purpura in Metastatic Prostate Cancer with only Endocrine Therapy
Thrombotic thrombocytopenic purpura (TTP) is a systemic disorder that presents acutely with multiple organ failure. Although defined classically as a syndrome with a pentad of features, it is accepted now that a diagnosis can be made with the dyad of microangiopathic haemolytic anaemia and thrombocytopenia.
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Original Article
Phosph-Akt1 Expression is Associated with a Favourable Prognosis in Pancreatic Cancer
Pancreatic cancer is the fourth leading cause of cancer related mortality worldwide with an estimated 34,290 deaths recorded in the United States in 2008. Of these, pancreatic ductal adenocarcinoma (PDAC) accounts for ~90% of all cases.
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Original Article
Prospective Audit of Febrile Neutropenia Management at a Tertiary University Hospital in Singapore
Febrile neutropenia (FN) is considered a medical emergency and remains a major cause of morbidity and mortality in Oncology and Haematology units worldwide. A study analysing pooled FN data from 115 US academic medical centres between 1995 and 2000 showed that the overall in-hospital mortality was 9.5%, whereas pooled...
Original Article
Central Clot Score at Computed Tomography as a Predictor of 30-day Mortality after Acute Pulmonary Embolism
Multi-detector Computed Tomography (MDCT) pulmonary angiography is currently the method of choice for the detection of acute pulmonary embolism (PE), because of its convenience, speed, sensitivity, direct clot visualisation and ability to provide alternative diagnoses that mimic PE clinically.
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Original Article
An Audit Study of the Sensitivity and Specificity of Ultrasound, Fine Needle Aspiration Cytology and Frozen Section in the Evaluation of Thyroid Malignancies in a Tertiary Institution
Thyroid lesions constitute a considerable bulk of surgical practice, majority of which are thyroid nodules. A large population study revealed that clinically apparent thyroid nodules were present in 6.4% of women and 1.5% of men.
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Original Article
Complementary and Alternative Medicine among Singapore Cancer Patients
Worldwide, the use of Complementary and Alternative Medicine (CAM) by cancer patients is highly prevalent. For cancer specialists, knowledge on CAM use in their patients is particularly important as there can be potentially hazardous drug interactions between some forms of oral CAM and chemotherapy or radiotherapy.
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Original Article
rTSβ as a Novel 5-fluorouracil Resistance Marker of Colorectal Cancer: A Preliminary Study
Although colorectal cancer is common in Western countries, in the past, it has been uncommon in Asian countries. However, its prevalence has gradually been increasing. Since 1982, malignant cancers have been the leading cause of death in Taiwan.
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Letter to the Editor
Dilemmas in Management of Brain Tumours in Pregnancy
Brain tumours in pregnancy are rare with an incidence of 15 per 100,000 and previous reports have shown variable outcomes. We present a case of glioblastoma multiforme (GBM) in pregnancy in which the patient underwent emergency craniotomy and adjuvant radiotherapy before delivering a healthy baby with good outcome.
This article...
Review Article
Peritoneal-based Malignancies and Their Treatment
Peritonectomy or cytoreductive surgery has been described as the treatment of choice for selected patients with evidence of peritoneal carcinomatosis (PC) from the gastrointestinal tract, peritoneum, ovaries and the disease of pseudomyxoma peritonei. Median survivals in a carefully selected patient population have been shown to exceed that of systemic...
Original Article
Immunophenotypic, Cytogenetic and Clinical Features of 113 Acute Lymphoblastic Leukaemia Patients in China
Acute lymphoblastic leukaemia (ALL) is a heterogeneous disease with abnormal proliferation and accumulation of immature lymphoblasts within the bone marrow (BM), peripheral blood and lymphoid tissues, and is composed of different genetic, biological, and clinically relevant subtypes. Morphological and cytochemical methods were the main tools for diagnosis and classification...
Letter to the Editor
Managing buccal space tumours
Dear Editor,
The buccal space is an infrequently addressed fascial space of the head and neck region. Intrinsic tumours of the buccal space are rare and hence present a management challenge. In a recent systematic review of 217 patients, 4 main surgical approaches were identified (intraoral, extended parotidectomy/rhytidectomy, transcutaneous...
Images in Medicine
Periarticular FDG Uptake on PET/CT in Malignant Melanoma—Metastatic or Misleading?
A 74-year-old male with newly diagnosed melanoma of the right mastoid region, underwent resection of the lesion followed by F-18 fluoro-deoxyglucose (FDG) positron
emission tomography/computed tomography (PET/CT) for staging. Figure 1 demonstrates a whole body maximal intensity projection image while Figures 2 and 3 show cross-sectional images through the elbows...
Letter to the Editor
Acute Marjolin’s Ulcer: A Forgotten Entity
Marjolin’s ulcers are malignancies that arise from areas of chronic irritation or injury that undergo malignant transformation after a period of many years. Such lesions are predominantly squamous cell carcinomas (SCC) and have long been associated with burn scars. Here we describe an unusual case of Marjolin’s ulcer that...
Original Article
Kidney Cancer and Diabetes Mellitus: A Population-Based Case-Control Study in Taiwan
Kidney cancer accounts for 3% to 4% of all cancers. In a systematic review by Mathew and et al,2 the incidence of kidney cancer was the highest in France (16.1 per 100,000
man-years) and the lowest in India (0.9 per 100,000 woman-years) during 1988 to 1992. A trend analysis in...
Images in Medicine
A 22-year-old Woman Had a Lung Mass
A 22-year-old woman had an abnormal chest X-ray (Fig. 1) in her regular health examination. She was asymptomatic and a non-smoker. Chest computed tomography (CT) revealed a 4-cm soft tissue mass with internal calcification (Fig. 2A) and enhancement in the left lower lobe (Fig. 2B). The patient received left...
Letter to the Editor
Bilateral Polychromatic Crystalline Keratopathy as the Initial Manifestation of IgG-Lambda Multiple Myeloma
Dear Editor,
Multiple myeloma is a subgroup of plasma cell dyscrasias with neoplastic proliferation of plasma cells or their precursors. Crystalline keratopathy is a well-recognised but rare ocular manifestation of multiple myeloma. We present a rare case of IgG-lambda multiple myeloma that manifested as polychromatic crystals in the cornea—a presentation...
Letter to the Editor
Low-Grade Fibromyxoid Sarcoma of the Thyroid: A Case Report
Dear Editor,
Low-grade fibromyxoid sarcoma (LGFMS) is a rare form of neoplasm that usually occurs in the deep soft tissue of the lower limbs with a tendency towards local recurrence and
distant metastasis. LGFMS affects mainly the young and middle-aged, with both gender having an equal chance of being affected. To...
Letter to the Editor
Five Patients with Medullary Thyroid Carcinoma Presenting as Asymptomatic Elevation of Carcinoembryonic Antigen Level
Early detection of malignancies is not easy. Few methods of health screening have been proven to be of value. The use of carcinoembryonic antigen (CEA) in health screening has never been proven to result in early detection of cancers but requests to test tumour markers continue to be made....
Editorial
Too Much Medicine: Time to Stop Indiscriminate Cancer Screening
Like most industrialised countries in the world, cancer has now become the leading cause of mortality in Singapore. Approximately 1 in 3 deaths in Singapore today is as a result of cancer. It is therefore unsurprising that cancer screening has become an integral part of health screening in primary...
Letter to the Editor
Ultrasound-Guided Thyroid Fine Needle Aspiration Biopsy—The Way Forward
I read with great interest the recent article published in the Annals of Academy of Medicine Singapore entitled, ‘Surgeon-Performed Ultrasound-Guided Fine Needle Aspiration Cytology (SP-US-FNAC) Shortens Time for Diagnosis of Thyroid Nodules, Ann Acad Med Singapore 2014;43:320-4’. Indeed, ultrasound-guided fine-needle aspiration (US-FNA) is an exceptionally valuable and simple approach...
Original Article
Relationships between Prostatic Volume and Intravesical Prostatic Protrusion on Transabdominal Ultrasound and Benign Prostatic Obstruction in Patients with Lower Urinary Tract Symptoms
Benign prostatic hyperplasia (BPH) is one of the commonest diseases of ageing men. It can be associated with bothersome lower urinary tract symptoms (LUTS) that affect quality of life and it causes structural and functional changes in the bladder. Previous clinical guidelines had emphasised on managing symptoms; however current...
Original Article
Are Pregnant Women Adequately Equipped for Autonomy in Pregnancy Screening?
The concept of first trimester screening (FTS) to evaluate the risk of fetal aneuploidies was first introduced in 1997 by Orlandi et al. The Fetal Medicine Foundation, London, has refined and populated this screening test that uses a combination of maternal age, nuchal translucency (NT) thickness and biochemical markers,...
Letter to the Editor
A Follow-up Longitudinal Survey on a Cohort of Undergraduate Medical Students’ Attitudes towards Radiology
As a follow-up to an earlier study comparing the attitudes of first year undergraduate medical students following the introduction of a new radiology curriculum in 2008 with their clinical seniors who did not have an early exposure to radiology; we again surveyed this same cohort of first year students...
Commentary
Transthyretin amyloid cardiomyopathy: The emerging role of cardiac amyloid imaging
Transthyretin amyloidosis (or ATTR amyloidosis) is an under-recognised multisystemic disorder, arising from misfolding of transthyretin proteins into insoluble amyloid fibrils. As amyloid fibrils deposit into various tissues and organs, the process invariably leads to organ dysfunction. Deposition of amyloid fibrils into the heart results in cardiac amyloidosis (CA). Manifestations...
Original Article
Outcomes of oesophageal cancer treated with neoadjuvant compared with definitive chemoradiotherapy
Oesophageal cancer is the 7th most common cancer in the world, with 572,034 new cases diagnosed in 2018, and is the 6th most common cause of cancer-related mortality worldwide. Oesophageal squamous cell carcinoma (SCC) is the predominant histological subtype. However, the incidence of adenocarcinoma has risen among the Western...