69 years, Male, ependymoma, 3 month follow-up for change. There is been interval evolution of postsurgical changes related to recent suboccipital craniectomy for posterior fossa ependymoma resection. As noted before, there has been near total resection. There is a small focus of expansile T2 signal and enhancement centered on the right inferior cerebellar peduncle, which measures approximately 12 x 9 x 14 mm, and is compatible with minimal residual tumor. No significant change of this lesion allowing for evolution of surrounding postoperative changes. No suspicious enhancement elsewhere in the brain. Ventricles have decreased in size since prior; no hydrocephalus. No evidence of midline shift or herniation. No evidence of acute ischemia or new hemorrhage. Chronic blood products are evident in the resection cavity and decreased since prior. Small right maxillary mucus retention cyst again seen. Bilateral lens implants.
Evolution of postsurgical changes related to posterior fossa ependymoma resection. Again seen is small residual tumor, which appears to be intraparenchymal, centered on the right inferior cerebellar peduncle, and measuring approximately 12 x 9 x 14 mm. No significant change of this lesion allowing for evolution of surrounding postoperative changes. No suspicious enhancement elsewhere in the brain. 