Meningioma of the Lateral Ventricle in a Young Adult

Abstract

Intraventricular neoplasms are uncommon CNS masses, representing only 10% of all tumours. Previous studies of intraventricular neoplasms have shown consistent trends in tumour location and in the age of patient presentation. Within the lateral ventricle, specific regions can be identified as sites of predilection for each particular tumour. It was found that these tumours tend to occur in natural age-related groupings. Meningiomas of the lateral ventricles of the brain are rare tumours. The incidence of this tumour type is very low, since they account for only 0.2% of all intracranial neoplasms and 0.5–5% of all intracranial meningiomas. We present a case of an intraventricular meningioma arising from the trigone in a young adult and discuss the available literature on intraventricular meningiomas and its differential diagnosis.