S giant cell astrocytoma (SEGA) is a rare, slow-growing, benign tumor (WHO grade I), typically seen in young patients under 20 years,1 but can be found in infants and fetuses. It usually occurs in patients with tuberous sclerosis (TS). The SEGA is typically seen as a soft, less-vascularized tumor, located in the wall of the lateral ventricle, or near the foramen of Monro. Calcifications, cysts,...
