Fig. 8

Intramedullary ependymoma in a 6-year-old girl. Sagittal T2W (A) and T1W (B) images demonstrate a well-marginated oval-shaped lesion in the dorsal spinal cord (white arrow) extending from D8–D9 vertebral levels with associated cord expansion and perilesional edema. The lesion appears hyperintense on the T2W image with hypointense areas in the center (asterisk) which also shows a hyperintense signal on the T1W (B) image likely due to intratumoral hemorrhage. A T2 hypointense rim noted at superior and inferior poles of the lesion represents the hemosiderin cap (yellow arrow). Sagittal T1 fat saturated post-contrast image (C) demonstrates mild peripheral enhancement in the lesion (arrow)