Ependymoma

Discussion:

This case demonstrates fairly typical imaging features of an ependymoma. Tumor necrosis, which was focally noted in this ependymoma, is one histologic parameter used for grading ependymomas. There were no other histologic features associated with aggressive biologic behavior in this sample. It should be noted that the correlation between tumor necrosis and biologic behavior is not as stringent in ependymomas as in diffusely infiltrating astrocytomas.

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