Differential diagnosis:
Meningioma (atypical), acoustic neuroma (vestibular schwannoma), jugular paraganglioma, facial nerve schwannoma, congenital cholesteatoma.
A large right skull base extra-axial infiltrative soft tissue mass lesion is seen implicating the right middle cranial fossa, petrous bone, and cerebellopontine angle showing multiple small flow voids, giving the tumor the characteristic “salt and pepper” appearance with vivid enhancement after post-contrast series, It is seen obliterating the inner and middle ears structures, Bony invasion is also demonstrated, with the mass extending extra-cranial along the right lateral upper cervical aspect. The mastoid antrum is obliterated causing an accumulation of fluid.