Intraventricular mass lesions.

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Abstract
Determining the precise etiology of an intraventricular mass can be a difficult diagnostic problem. CT [computed tomography] and angiographic findings were reviewed in a series of 73 patients who had intraventricular masses. The histologic diagnosis can be suggested preoperatively by an analysis of the frequency of lesions occurring at a given ventricular location, lesion density before and after administration of contrast material, age and sex of the patient, morphologic appearance of the mass, and presence or absence of hydrocephalus. Angiography is useful when meningioma, choroid plexus papilloma and carcinoma or arteriovenous malformation are considered. The differential features of each diagnostic entity are discussed.