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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...

Attitude towards screening for congenital cytomegalovirus infection in newborns in Singapore

Dear Editor, Cytomegalovirus (CMV) infection is the most common congenital infection.1 A systematic review that included 77 studies from 36 countries reported that the overall...

COVID-19 vaccination acceptance of healthcare workers in Singapore

The Coronavirus disease 2019 (COVID-19) pandemic resulted in 511.0 million cases of confirmed SARS-CoV-2 infection and almost 6.2 million deaths globally as of end...

Diagnosis and management of polycystic ovary syndrome: Perspectives of clinicians in Singapore

Polycystic ovary syndrome (PCOS) is a common endocrine disorder estimated to affect 4–21% of women, depending on the diagnostic criteria used.1 Clinical manifestations of the...

Mesothelial Splenic Cyst—A Case Report

Non-parasitic cystic lesions of the spleen are unusual. They are classified essentially as primary (true, epithelial) and secondary (pseudo, non-epithelial) based on the presence...

A Randomized Trial of the Use of Print Material and Personal Contact to Improve Mammography Uptake Among Screening Non-attenders in Singapore

Breast cancer is the most common cancer among females in Singapore. Although lower than incidence rates in North America and the United Kingdom the...

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...

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...

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...

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...

Serum Selenium in the General Population of Singapore, 1993 to 1995

The current disease pattern in Singapore (an island state of 3.3 million people composed of 76% Chinese, 14% Malays, 7% Asian Indians and 3%...

Serum Ferritin and Iron Status in the General Population of Singapore, 1993 to 1995

Iron, a dietary constituent, is an essential element. Body iron stores can be measured by haemoglobin, serum ferritin, transferrin saturation, and erythrocyte protoporphyrin. This article...

The StuI Polymorphism on Exon 8 of the Low Density Lipoprotein (LDL) Receptor Gene: Prevalence and Impact on Serum Lipid Levels in an Asian Cohort

The low density lipoprotein (LDL) particles in the plasma carry most of the cholesterol in circulation. High levels of plasma cholesterol and LDL-cholesterol are...

Epidemiological Surveillance of Melioidosis in Singapore

Melioidosis was first described in 1911 among vagrants and morphine addicts brought into the mortuary in Rangoon, Burma. However, the disease received little attention...

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...

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)....

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...

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...

Non-diagnostic Smears in Aspiration Cytology of Palpable Breast Lumps

A wide variety of neoplastic and non-neoplastic lesions have been described in the breast. Breast tissue is also subjected to many physiologic changes such...

Population-based Mammographic Screening in Singapore: What are Participants’ Views?

Breast cancer is the most common cancer among women in Singapore and has been increasing in incidence since 1968. This rise is particularly marked...

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,...

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...

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...

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...

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,...

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...

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. This 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...

Hypoglycaemia from Islet Cell Hyperplasia and Nesidioblastosis in a Patient with Type 2 Diabetes Mellitus—A Case Report

A 57-year-old woman was admitted to our hospital for perforated left tubo-ovarian abscess and found to have newly diagnosed diabetes with an admission blood...

Cardiovascular Disease: Genes and Public Health

The excitement surrounding the Human Genome Project and its impending completion has raised expectations of the possibilities for genetics in common disease. It is...

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...

Body Mass Index Profile in Hong Kong Chinese Adults

Obesity is considered a chronic disease and not just a social stigma due to the associated morbidity and early mortality. Obesity has now become...

Sudden Death Due to Granulomatous Myocarditis: A Case of Sarcoidosis?

Granulomatous myocarditis and sarcoidosis are considered uncommon entities in our local community and sudden death due to either condition has not been described in...

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...

Evidence-based Health Promotion: Applying it in Practice

There has been a growing interest in health promotion among health professionals and policy makers in Singapore. This is partly in response to the...

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...

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...

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...

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...

Epidemiology of Beta-haemolytic Group G Streptococcal Bacteraemia in Singapore (1996 to 1998)

Human isolates of group G streptococci (GGS) that form large colonies are similar to group A streptococci (GAS) in terms of virulence and cause...

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...

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...

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...

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...

Is Healthcare Competition Healthy?

There are many problems which all Health Ministers worry about. But we can generally boil them down to one common problem: “money no enough”. This...

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...

Public Disclosure of Healthcare Performance Information and Its Application to the Singapore Context

It has been said that apart from the prevention of diseases, the best chance of improving health is through improving the quality of care...

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...

Carcinoma of the Cervix: Role of MR Imaging

In females with cancer, cervical carcinoma is second to breast cancer in both incidence and mortality worldwide. About 465,000 new cases are diagnosed each...

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...

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...

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...

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...

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...

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...

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...

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. This 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...

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...

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...

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...

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...

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...

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...

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...

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...

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....

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...

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...

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...

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...

Nipah Encephalitis Outbreak in Malaysia

From September 1998 to June 1999, there was an outbreak of viral encephalitis in several pig farming villages in Malaysia. The outbreak, which started...

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)...

An intensely pruritic disseminated skin eruption

A 64-year-old man presented to the dermatology outpatient clinic with a 4-month history of pruritic papules. He had a significant medical history of thyrotoxicosis,...

Patterns and predictors of sound levels in hospital rooms

Dear Editor,      Excessive sound levels in the hospital can impair the work performance of healthcare professionals and affect patient well-being.1 Previous studies have also...

Lymphomas Involving Waldeyer’s Ring: Placement, Paradigms, Peculiarities, Pitfalls, Patterns and Postulates

As the histopathological diagnosis of any lymphoma still largely hinges upon the demonstration of lymphoid architectural abnormality, the pathologist must first be cognizant of...

Melanocytic Lesions of the Face: Diagnostic Pitfalls

Cutaneous melanocytic lesions are amongst the commonest tumours in all races but are more common in Caucasians with fair skin. Although most are benign...

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...

The Role of Public Health and Occupational Physicians in the New Millennium

I want to thank the Chapter and organisers for honouring me with this kind invitation to speak to you. This millennium is only 4...

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...

A Study on SARS Awareness and Health-seeking Behaviour – Findings from a Sampled Population Attending National Healthcare Group Polyclinics

There was a worldwide outbreak of Severe Acute Respiratory Syndrome (SARS) caused by the novel coronavirus between November 2002 and July 2003. Singapore was...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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....

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...

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...

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...

Issues and Challenges for Myopia Research

Myopia is an ocular disorder of major public health and socioeconomic significance in many East Asian urban cities. In Singapore, the prevalence of myopia...

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...

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...

Presumed Dapsone-induced Drug Hypersensitivity Syndrome Causing Reversible Hypersensitivity Myocarditis and Thyrotoxicosis

A 22-year-old Malay soldier doing his National Service was warded with a 6-day history of an itchy generalised rash associated with fever and lymphadenopathy....

Study of Inherited Metabolic Disorders in Singapore – 13 Years Experience

Inborn errors of metabolism (IEMs) described in the early 1900s by Garrod were due to a block in a metabolic pathway, arising from an...

External Proficiency Testing Programmes in Laboratory Diagnoses of Inherited Metabolic Disorders

In order to monitor and ensure the quality of our laboratory diagnoses for inherited metabolic disorders (IMDs), our laboratory participated in the proficiency testing...

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...

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...

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...

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...

Bodies Recovered from Wells, Sewerage Systems and Pits: What is the Cause of Death?

It may be difficult to determine the identities, and cause and time of death in corpses found in wells, sewer systems and pits because...

Environmental Planning and Urban Health

Environmental exposures to the adverse effects from climate change are expected to increase for many urban populations in the United States during the next...

Buprenorphine-associated Deaths in Singapore

Buprenorphine is a thebaine derivative that was developed in the 1970s for pain relief. It was approved for substitution therapy in France in 1996,...

Plasma and Urine Amino Acid Profiles in a Healthy Adult Population of Singapore

Analysis of blood plasma and urinary amino acids is required for the diagnosis and management of inherited metabolic disorders (IMDs) affecting one or more...

SARS Revisited: Managing “Outbreaks” With “Communications”

In the short span of 3 years since SARS first appeared on the Asian landscape, terms like “risk communications” and “outbreak communications” have assumed...

SARS and Emerging Infectious Diseases: A Challenge to Place Global Solidarity above National Sovereignty

The majority of the world’s information about infectious disease outbreaks no longer comes from voluntary reporting by countries, the willingness of which is influenced...

SARS in Singapore – Key Lessons from an Epidemic

The 2003 severe acute respiratory syndrome (SARS) outbreak represented the most severe communicable disease challenge to the public health system and the government and...

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...

Rising Trends of STIs and HIV Infection in Singapore – A Review of Epidemiology Over the last 10 Years (1994 to 2003)

A review of the epidemiology and trends of sexually transmitted infections (STIs) in Singapore from 1977 to 1996 showed a declining number of all...

Variables Determining Perceived Global Health Ranks: Findings from a Population-based Study

In 1982, Mossey and Shapiro first demonstrated that global self-rating of health was a better predictor of 7-year survival than medical records or self-reports...

Public Healthcare – Welfare, Market Share or Laissez-faire? – A Sentosa Carlsberg Skytower View

Recently, two doctor-administrators commented to me separately, “Singapore probably has the best public healthcare system in the world.” While I understand the basis for...

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...

Disaster Relief and Initial Response to the Earthquake and Tsunami in Meulaboh, Indonesia

A massive earthquake and tsunami hit the South Asian region on 26 December 2004, killing more than 200,000 people and displacing countless more.1 The...

Graduate Public Health Education – Singapore’s Contribution to Strengthening Capacity in the Region and Beyond

The effectiveness with which the world tackles its most pressing public health problems depends crucially on the calibre of its public health workforce. Institutions...

The Emerging Challenge of Age-related Eye Diseases in Singapore

Singapore has one of the fastest ageing populations in the world today. The current elderly population, defined as persons 65 years or older, comprises...

Risk Communications: In Search of a Pandemic

The first decade of the new millennium has seen a string of disasters worldwide – earthquakes, tsunamis, floods, typhoons and acts of terrorism –...

Prevention and Control of Avian Influenza in Singapore

Avian influenza (AI) or “bird flu” is a highly infectious disease of birds. AI viruses are negative single-stranded enveloped RNA viruses that belong to...

Preparing for an Influenza Pandemic in Singapore

The last influenza pandemics occurred in 1957 and 1968. Few remember the pandemic in 1968 in Singapore as it was relatively mild. This article is...

Avian Influenza and Pandemic Influenza Preparedness in Hong Kong

In 1997, Hong Kong became reputed by identifying the first instance of human infection with avian influenza H5N1. A total of 18 cases occurred...

Towards Mutual Trust, Transparency and Equity in Virus Sharing Mechanism: The Avian Influenza Case of Indonesia

Since July 2005 to December 2007, Indonesia has reported the highest number of influenza A (H5N1) human cases in the world, i.e., 116 cases...

A Global Perspective on Avian Influenza

The world is confronted by many important public health challenges, some of which constitute potentially devastating global threats. Prime among these is the threat...

Twentieth Century Influenza Pandemics in Singapore

Tropical countries such as Singapore, although without well-defined influenza seasons, are also affected by influenza epidemics and pandemics. Twenty per cent of Singapore’s population...

A Cross-sectional Study of Primary-care Physicians in Singapore on Their Concerns and Preparedness for an Avian Influenza Outbreak

Outbreaks of avian influenza (AI) caused by the H5N1 subtype in several Asian countries have raised concern all over the world. AI is endemic...

Singapore and the Tobacco Pandemic

The World Health Organization, in its 2008 Report on the Global Tobacco Epidemic, has framed the problem in almost apocalyptic terms, in stating that...

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...

Pericardial Thymoma: An Unusual Cause of Sudden Death

Thymomas are located in the normal location of the thymus, the anterior mediastinum. It is very rare for thymomas to arise primarily intrapericardialy. This article...

Concerns, Perceived Impact and Preparedness in an Avian Influenza Pandemic – a Comparative Study between Healthcare Workers in Primary and Tertiary Care

The danger posed by emerging infectious diseases has become greater in the past few years with the World Health Organization (WHO) warning that the...

Public Perceptions of Healthcare in Singapore

Healthcare is increasingly dominating the policy agenda in developed countries. In the United States, healthcare has been ranked only behind the war in Iraq...

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...

Public Misperceptions About Transmission of Hepatitis B Virus in Singapore

Chronic hepatitis B (CHB) is an important global health problem, with more than 350 million individuals affected worldwide. CHB is particularly important in Asia,...

A History of the Chapter of Public Health and Occupational Physicians

The history of the Chapter of Public Health and Occupational Physicians began with the founding of the Academy of Medicine in 1957. It was...

A Brief History of Pathology and the Chapter of Pathologists

A history of the Chapter of Pathologists would be incomplete without a history of the specialty of Pathology in Singapore. Pathology is in fact...

Peritoneo-Cutaneous Fistula Secondary to Skin Excoriation from a Large Chronic Incisional Hernia

Incisional hernias are common complications following abdominal surgery with an incidence of 2% to 20% after midline laparotomy. Umbilical fluid discharge is, however, an...

The Evolving Role of the Community Pharmacist in Chronic Disease Management – A Literature Review

Pharmacy has matured as a clinical profession and is presently well positioned to transform itself from a product and task oriented (dispensing) to a...

Pathological Video-Gaming among Singaporean Youth

Video-gaming and internet use are a part of the lives of children and adolescents today. Among countries that are highly wired with high speed...

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...

Trends in Importation of Communicable Diseases into Singapore

Singapore is a city-state in Southeast Asia, with a total population in 2007 of 4,839,400, of which 3,642,700 (75.3%) are Singaporean residents. The remaining...

Validity and Reliability of the Zarit Burden Interview in Assessing Caregiving Burden

Dementia is a growing public health issue in the Asia-Pacific region. The number of people with dementia in the Asia-Pacific region will increase from...

Multi-disease Health Screening in an Urban Low-income Setting: A Community-based Study

With the burden of chronic disease rising amongst rapidly urbanising Asian populations, active participation in health screening would allow for early detection and management...

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...

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...

The Pedagogical Value of a Student-run Community-based Experiential Learning Project: The Yong Loo Lin School of Medicine Public Health Screening

Experiential learning brings medical students out of the comfort zone of learning in their classrooms to acquire and apply knowledge and skills in an...

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...

Comparison of Clinical Outcomes and Cost Between Surgical and Transcatheter Device Closure of Atrial Septal Defects in Singapore Children

Congenital heart defects (CHD), with an incidence of approximately 1 in 100 live births, are the most important and frequent congenital malformations. It can...

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...

Acceptability of Medical Students by Patients from Private and Public Family Practices and Specialist Outpatient Clinics

In recent decades, medical advances and economic pressures have shifted medical student training from hospital inpatient to ambulatory settings such as hospital outpatient and...

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....

Peripheral Arterial Disease in Community-based Patients with Diabetes in Singapore: Results from a Primary Healthcare Study

Peripheral arterial disease (PAD) is a significant complication of diabetes mellitus and accounts for the majority of amputations among these patients with diabetes. In...

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,...

Knowledge, Attitudes and Practices of the Advance Medical Directive in a Residential Estate in Singapore

The Advance Medical Directive (AMD) Act was passed in Parliament in May 1996. The AMD is a legal document that an individual can sign...

Attitudes of Patients, Visitors and Healthcare Workers at a Tertiary Hospital Towards Influenza A (H1N1) Response Measures

Following the announcement by the World Health Organization (WHO) that outbreaks of a novel influenza virus had occurred in Mexico and several parts of...

Drug-induced Kidney Disease – Pathology and Current Concepts

Departing from the usual account of drug-induced renal disease according to the specific type of drug, we divide this discussion into 3 main areas...

Research on Psychoneuroimmunology: Does Stress Influence Immunity and Cause Coronary Artery Disease?

In recent decades, there has been increasing interest in exploring the relationship between psychological stress and various health conditions. An enlarging body of evidence...

Trends in Long-term Cancer Survival in Singapore: 1968-2002

With increasing health awareness and the greater extent of healthcare provision over the years, the life expectancy of Singaporeans has increased from 75.3 in...

Knowledge and Practice of Household Mosquito Breeding Control Measures between a Dengue Hotspot and Non-Hotspot in Singapore

Dengue is the most common mosquito-borne viral disease in the world and its severity is reflected by a 30-fold increase over the last 50...

Epidemiological Surveillance and Control of Rubella in Singapore, 1991-2007

Rubella is a mild febrile viral exanthematous disease transmitted through droplets or direct contact with the nasopharyngeal secretion of an infected person. It is...

Genome-wide Association Studies: Promises and Pitfalls

Genetic testing is an important means to confirm the diagnosis of an inheritable disease. For this to be feasible, genes that are associated with...

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...

Sleep, Public Health and Wellness: The Elephant in the Room

The rising cost of health care and the burden of chronic illness are perennial concerns. Remarkably, there exists a measure that around 30% of...

Healthcare cost of patients with multiple chronic diseases in Singapore public primary care setting

The rising occurrence of individuals suffering from multiple chronic diseases, namely multimorbidity, is of public health concern globally.1 The current prevalence of multimorbidity in...

Prevention and management of multimorbidity to ensure healthcare sustainability

Singapore has a healthcare system that is distinguished by its ability to achieve top health outcomes at very low healthcare expenditures.1 Yet one of...

Prevalence of Overweight and Obesity in Chinese Preschoolers in Singapore

The increasing prevalence of childhood overweight and obesity and its associated adverse health outcomes have become an important health issue. Childhood obesity can persist...

Is Cost-Effective Healthcare Compatible with Publicly Financed Academic Medical Centres?

Nearly all legislation involves a weighing of public needs as against private desires; and likewise a weighing of relative social values. —Louis D Brandeis As a...

A Review of Back Injury Cases Notified to the Ministry of Manpower from 2011 to 2012

Work-related low back disorders consist of both low back pain (LBP) and low back injuries. They are a significant and increasing problem all over...

How do English-speaking Cancer Patients Conceptualise Personhood?

Understanding the way personhood or “what makes you, you” is conceptualised is pivotal to the practice of medicine. Conceptions of personhood determine the moral...

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...

MERS-CoV: Where Are We Now?

Prior to 2002, coronaviruses were known mainly for causing mild human upper respiratory tract infections (URTIs) and enteric and respiratory infections in many animals....

Diagnosing Bacteraemia Early in Older Adults

Sepsis is a prevalent and important cause of morbidity and mortality in the general population. Approximately 750,000 patients in the United States alone develop...

An External Independent Validation of APACHE IV in a Malaysian Intensive Care Unit

Over the past 30 years, different versions of severity of illness scoring systems and prognostic models have been developed for prediction of patient outcomes...

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...

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)...

Risk Factors for Severe Adenovirus Infection in Children during an Outbreak in Singapore

Human adenoviruses (HAdVs) are well known pathogens that cause a variety of human illnesses. They are non-enveloped, linear double-stranded deoxyribonucleic acid (DNA) viruses. More...

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...

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...

Safety and Effectiveness of Improving Carbapenem Use via Prospective Review and Feedback in a Multidisciplinary Antimicrobial Stewardship Programme

Multidrug-resistant (MDR) bacteria coupled with a rapidly diminishing antimicrobial pipeline has made antimicrobial resistance an international public health problem. Control strategies of MDR bacteria...

Anaerobic Bacteraemia Revisited: Species and Susceptibilities

Over the last 2 decades, the importance of anaerobic bacteraemia has undergone various shifts in opinion. Early studies in the 1970s reported that anaerobes...

Factors and experiences associated with unscheduled 30-day hospital readmission: A mixed method study

Readmission leads to a greater demand for healthcare services, especially hospital beds, and contributes to the rising healthcare costs.1,2 With estimated one-third of the...

Potentially avoidable readmissions: Understanding drivers and technology-enabled solutions

Hospital admissions places high resource demands on the health system, and is a major cost-driver in Singapore and globally.1-3 Admissions have and will continue...

Health professions education in pandemics and epidemics: A proposed framework for educators

The COVID-19 pandemic has disrupted healthcare systems and health professions education (HPE). There are few frameworks to help educators manage HPE before, during and...

The “Jeff Cut”: A simple innovation to minimise up-riding sleeves of protective gown

Personal protective equipment (PPE) including the N95 mask, face shield, cap, splash-resistant gown and gloves are worn by frontline healthcare workers for various duties...

Merits of a harmonised system to classify drug-related problems in Singapore

A drug-related problem (DRP) is commonly defined as an event or circumstance involving drug treatment that actually or potentially interferes with the optimal outcome...

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...

Factors influencing protective behaviours during haze episodes in Singapore: A population-based study

Southeast Asia suffers from recurrent episodic air pollution from biomass smoke known as haze, which is mainly caused by human activities such as the...

Seasonal haze: Knowledge gaps and risk perception behaviours

The seasonal haze in Southeast Asia has been a recurrent concern whenever we enter the southwest monsoon season (June–September). This phenomenon, caused by agricultural...

Impact of unemployment on mental disorders, physical health and quality of life: Findings from the Singapore Mental Health Study

Several reviews and meta-analyses have established an association between unemployment and psychological distress. This relationship between unemployment and mental health is complex and likely...

Health-seeking behaviour of foreign workers in Singapore: Insights from emergency department visits

Singapore employs a large foreign worker (FW) population, defined as non-Singapore citizens and non-permanent residents working locally. Holders of “work permit” (WP), the work...

Accuracy of self-reported height, weight and BMI in a multiethnic Asian population

Overweight and obesity continue to be one of the most critical public health issues worldwide. Body mass index (BMI) derived from height and weight...

Vulnerability to rumours during the COVID-19 pandemic in Singapore

The global outbreak of coronavirus disease 2019 (COVID-19) has come with increased psychological burden. In several meta-analyses, depression and anxiety symptoms have been found...

Behavioural changes during the COVID-19 pandemic: Results of a nationwide survey in Singapore

In response to the global outbreak of coronavirus disease 2019 (COVID-19), Singapore undertook a multipronged approach to contain the pandemic. Of note, when community...

The Novel Coronavirus (SARS-CoV-2) Pandemic

The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic began in early December in Wuhan, the 7th most populous city in Mainland China, and...

Comparative Analysis of Symptomatic and Asymptomatic SARS-CoV-2 Infection in Children

Singapore confirmed its first case of COVID-19 on 23 January 2020 in a Chinese national from Wuhan, and its first paediatric case on February...

Managing a Renal Transplant Programme During the COVID-19 Pandemic: Practical Experience from a Singapore Transplant Centre

As infrastructure and policies were being put in place to combat COVID-19, we recognised that specialty-specific policies and protocols had to be drawn up...

Coronavirus Disease 2019 (COVID-19): The Singapore Experience. A Review of the First Eight Months

Singapore reported its first imported case of COVID-19 on 23 January 20201 and its first COVID-19 deaths on 21 March 2020.2 The WHO declared...

Hypervirulent Klebsiella pneumoniae carriage in polyclinic attendees and national servicemen presenting with diarrhoea

Klebsiella pneumoniae liver abscess is an invasive syndrome that mainly affects people living in East Asia. It especially affects adults with diabetes and is...

PLA2R1 and HLA-DQA1 gene variations in idiopathic membranous nephropathy in South China

Membranous nephropathy is an organ-specific autoimmune disease and is the most common cause of adult-onset nephrotic syndrome. The diagnosis of membranous nephropathy mainly depends...

Alternating hemiplegia of childhood presenting as recurrent apnoea in a term newborn infant

Recurrent apnoea in a term infant is usually pathologic, warranting a thorough aetiologic evaluation. An accurate diagnosis is essential in guiding subsequent management and...

Chronic disease self-management competency and care satisfaction between users of public and private primary care in Singapore

Primary care in Singapore is set to face challenges in managing a rapidly ageing population. The expected population of older adults aged 65 years...

Paediatric emergency department attendances during COVID-19 and SARS in Singapore

Coronavirus disease 2019 (COVID-19) was declared a pandemic by the World Health Organization (WHO) on 11 March 2020, with over 110 million cumulative cases...