Right-sided acoustic neuroma, resected: yearly follow up. There are stable postoperative findings related to suboccipital craniotomy for resection of a right vestibular schwannoma, including right cerebellar hemisphere and middle cerebellar peduncle encephalomalacia. There is no evidence of recurrent vestibular schwannoma. There is disruption of the right cranial nerve 7 and 8 complex as well as volume loss of the right trigeminal nerve. There is also persistent loss of fluid signal within the right cochlea. The left internal auditory canal contents and inner ear structures are unremarkable. There is no evidence of intracranial hemorrhage or acute infarct. The supratentorial brain parenchyma appears unremarkable. The ventricles are stable in size and configuration. There is no midline shift or herniation. The major cerebral vessels are grossly intact. The skull and extracranial soft tissues are unchanged, including asymmetric loss of bulk of the right mimetic muscles.
Postoperative findings related to right retrosigmoid resection of a vestibular schwannoma without evidence of gross recurrent tumor.