A Case of Huge Intraventricular Menigioma of the Trigone: Case Report

The authors present a case of huge intraventricular meningioma on the trigone of the right lateral ventricle of a 42-year old female. The mass was a huge multilobulated yellowish gray tumor, which was relatively rubbery hard. Intratumoral removal was performed by ultrasonic aspirator at east. Later thin outer surface of the tumor was retracted and extirpated. Microscopic examination revealed transitional type of meningioma consisted of concentric whorls of elongated tumor cells and psammoma bodies. Occasionally the center of whorls contained capillary blood vessels. Postoperative course was uneventful. Extremely minimal visual field defect was detected without the patient's subjective complaint.