Mass centered in the right Meckel's cave/cavernous sinus with extracranial extension including extensive perineural spread involving V2/pterygopalatine fossa, V3 and mandibular nerve, and the facial nerve on the right, as well as spread through the right superior orbital fissure into the right orbital apex compressing the optic nerve. There is thin but extensive right dural thickening and bony hyperostosis, which favors meningioma. The patient proceeded to biopsy, which was unfortunately non-diagnostic.