Primary central nervous system lymphoma (PCNSL) is a rare tumour accounting for 4% of all brain neoplasms. In immunocompetent patients, it tends to present as a large solitary hemispheric mass with periventricular lesions giving rise to ependymal seeding in 38% of the cases. Leptomeningeal metastases of the PCNSL at presentation are rare, accounting for only 2.3% of the cases. We present a rare case of primary intraventricular PCNSL with diffuse leptomeningeal spread at presentation. In this case study, we discuss the differential diagnoses and diagnostic approach to disseminated intraventricular masses.
This article is available only as a PDF. Please click on “Download PDF” on top to view the full article.