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Supratentorial Ependymoma

Last Updated: October 1, 2018

Figure 1: This aggressive-looking right frontal anaplastic ependymoma is in an extra-ventricular location more typical of the supratentorial ependymoma. As in this lesion, calcifications are common and are visible as low signal intensity on GRE/SWI (top row left). This tumor also demonstrates dark restricted diffusion on ADC (top row right) representing hypercellularity. Enhancement on postcontrast T1WI (bottom) is also common.

 

Figure 2: This supratentorial ependymoma is in a typical extraventricular location. The complex cystic and solid appearance is also more classic for these lesions, very different in appearance from infratentorial ependymomas. The bright signal of the cystic component that is different from CSF on FLAIR (top row left) implies hemorrhagic or proteinaceous cyst...