INTRODUCTION:The cerebellopontine angle is a triangular space located behind the pyramid, just below the tentorium, anterior to the pons, and ventral to the cerebellum. It is formed by the top and bottom extremities of the cerebellopontine rupture. The CPA consists of the CPA cistern and contains the trigeminal, adductive, facial, and vestibulocochlear nerves, the cerebellar above and anterior cerebellar arteries below the cerebellum flocculus and the choroidal plexus that sticks out from the Lustra foramen.1 CPA tumors make up 5–10 percent of all intracranial neoplasms2,3 A most common vestibular schwannomas accompanied by meningiomas and tumors of the epidermis. Certain cranial nerves, glomus jugular tumors, cavernomas, and congenital, renal, and metastatic lesions are rare primary CPA lesions. Tumors from adjacent structures-gliomas, ependymomas, choroid plexus papilloma, and vascular malformations involve the CPA secondarily.4 CPA is a region between the pons & cerebellum and the lateral portion of the temporal petrous bone, 5th, 7th & 8th cranial nerves & AICA Important structures of the CPA include most CPA lesions.5