Meningiomas of the Third Ventricle in Childhood

Citation: GENC A, Kasapoglu B. Meningiomas of the Third Ventricle in Childhood. Neurosurg. 2016, 1:2. Intraventricular meningiomas are rare and relatively more often seen in children. Most often, these arise from the lateral ventricular walls. On the other hand, meningiomas of the third ventricle are extremely unusual and difficult to diagnose [1]. Those meningiomas arising in the third ventricle account for 0,15% of all meningiomas [2] and less than 20 cases have been reported in English literature [2, 3]. These tumors are considered as a subtype of pineal region tumors that arise from the posterior portion of the velum interpositum, the double layer of pia mater that forms the roof of the third ventricle. The origin of these tumors can be traced to embryological invagination of arachnoid cells into the choroid plexus [1, 2]. In this letter we present two cases of huge meningiomas of the third ventricle in pediatric patients, including one atypical meningioma.