Glioma, Subependymal

**Definition:** Rare, slow-growing, benign intraventricular tumors, often asymptomatic and discovered incidentally. The tumors are classified histologically as ependymomas and demonstrate a proliferation of subependymal fibrillary astrocytes among the ependymal tumor cells. (From Clin Neurol Neurosurg 1997 Feb;99(1):17-22)

**Tree numbers:** - C04.557.465.625.600.380.290.390 - C04.557.470.670.380.290.390 - C04.557.580.625.600.380.290.390

**Synonyms:** - Subependymal Glioma - Subependymal Astrocytoma - Subependymoma