Grade 2 Ependymoma posterior fossa f/u post RT. There are postsurgical findings related to suboccipital craniectomy for posterior fossa mass resection are again seen. There is a small of expansile T2 hyperintense enhancing lesion centered on the right inferior cerebellar peduncle consistent with residual tumor, which measures approximately 10 x 9 x 15 mm, similar to prior examination. There has been no significant change of this lesion, allowing for evolution of surrounding postoperative effects. There is no evidence of tumors elsewhere in the brain. The ventricles are unchanged in size. There is no evidence of midline shift or herniation. There is no evidence of acute ischemia or new hemorrhage. There is a small right maxillary mucus retention cyst.
Postoperative findings related to posterior fossa ependymoma resection with a small residual right inferior cerebellar peduncle tumor appears similar to prior examination from 5/18/2016. I personally reviewed the Images and/or procedure with the Resident/Fellow and agree with this report.