Hemangioblastoma of the Fourth Ventricle : Case Report

mal cells and a subependymal plate composed of glial cells. Accordingly, these layers give rise to ependymomas, subependymomas, and subependymal giant cell astrocytomas (1). Hemangioblastomas are benign vascular tumors with an uncertain origin. They account for 12% of all intracranial tumors, and are a component of the von Hippel-Lindau syndrome in 30% of cases (2, 3). Hemangioblastomas usually occur in the infratentorial region, especially the cerebellum, the pons, medulla oblongata, spinal cord, and rarely the supratentorial locations (2, 3). Moreover, intraventricular hemangioblastomas are also very unusual, as are hemangioblastomas of the fourth ventricle. Here, we described a hemangioblastoma of the fourth ventricle which was completely excised. Case Report