<prompt> Schwannomas of 8th cranial nerve most common site is?Petrous boneIntracanalicularCisternalCerebellopontine angle  <response>: Schwannomas occurs most commonly along the cranial nerve VIII. One of the features distinguishing vestibular schwannomas from meningiomas is expansion of internal auditory canal seen in vestibular schwannomas. Vestibular schwannomas accounts for more than 90 of purely intracanalicular lesions. Approximately 10-20 of vestibular schwannomas present only in cerebellopontine angle cistern without an IAC stem. About 75 of vestibular schwannomas have a canalicular and cisternal portion 