Posterior fossa ependymoma

Discussion:

Differential diagnoses include: ependymomachoroid plexus papilloma or carcinoma, medulloblastoma, and atypical teratoid rhabdoid tumor.

Pathology proved to be a posterior fossa ependymoma.

Note: as molecular profiling is unavailable in this case, it would have the diagnosis of posterior fossa ependymoma not otherwise specified (NOS). 

Spine MRI was performed to rule out drop mets (images not included): there was no evidence of subarachnoid seeding of tumor.

Tumor was resected as visualized above.

 

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