paediatrics Brussels 17

Ependymoma - MRI

• Heterogeneous tumor • Solid components iso- to hyperintense on T2/FLAIR • T2 hyperintense cysts frequently seen • Hypointense areas reflect calcification and/or hemorrhage • Usually iso- to hypointense on T1 • Enhancement is variable • Post. fossa tumors grow to fill 4V; may invade brainstem