History of neurofibromatosis type II history of acoustic neuroma and central lesions in the spine. Evaluate for change in lesion size: yearly follow up evaluate for change to tumor size. There are postoperative findings related to left suboccipital craniotomy for resection of a left vestibular schwannoma with left cerebellar hemisphere encephalomalacia. There are unchanged punctate foci of enhancement in the left cerebellopontine angle cistern and skeletonized internal auditory canal. There is an unchanged enhancing mass centered in the right internal auditory canal that measures up to 14 mm. There is no significant interval change in the bilateral Meckel cave enhancing masses, measuring up to 25 mm on the right and 20 mm on the left. There is slight increase in size of an enhancing mass centered in the right Oc-C1 neural foramen with mild protrusion into the spinal canal that measures up to approximately 24 mm, previously 22 mm. There is also an unchanged mildly enhancing mass with areas of susceptibility effect along the tentorial apex that measures up to 18 mm. There is an unchanged cluster of enlarged right superior frontal gyrus perivascular spaces. The ventricles and basal cisterns are unchanged in size and configuration. There is no midline shift or herniation. The major cerebral flow voids are intact. The orbits, skull, paranasal sinuses, and scalp soft tissues are unchanged.
1. Apparent slight interval increase in size of the right craniocervical junction mass.2. Unchanged appearance of the left vestibular schwannoma resection bed without evidence of gross recurrent tumor.3. Unchanged right vestibular schwannoma.4. Unchanged bilateral trigeminal nerve schwannomas.5. Unchanged tentorial apex probable meningioma.