Hemangiopericytoma arising in the body of the lateral ventricle.

A 65-year-old woman presented with a very rare hemangiopericytoma in the body of the lateral ventricle.Magnetic resonance imaging demonstrated a homogeneously enhancing mass lesion occupying the bilateral medial portions of the body of the lateral ventricle. Cerebral angiography disclosed a vascular-rich tumor, fed mainly by the left lateral posterior choroidal artery. After devascularization of the feeding vessel by endovascular coiling, the patient underwent complete surgical excision of the tumor via an anterior transcallosal approach, followed by radiation therapy, and has thus far been disease-free for 5 years. The present patient represents the first reported case of hemangiopericytoma arising in the body of the lateral ventricle. In this location of hemangiopericytoma, preoperative embolization could provide a promising option in terms of reducing the intraoperative blood loss and achieving total tumor extirpation with minimum damage to the surrounding structures. Since preoperative identification of hemangiopericytomas confers therapeutic advantages,it is important to be aware that they can occur at unusual ventricular sites.