A large mass occupying left CPA cistern, left-sided posterior fossa, left middle cranial fossa and posterior aspect of left cavernous sinus measured about 8.1x5.0x4.7 cm, suggestive of recurrent meningioma. Compression to left-sided medulla/pons, left cerebellar hemisphere, 4th ventricle and medial left temporal lobe causing mild hydrocephalus.