الفهرس 
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Abstract
Schwannomas are benign, slowly growing, non-invasive neoplasms derived from Schwann cells and usually arise from peripheral nerves. They may also arise from cranial nerves, most commonly the vestibular part of the eighth nerve (Fletcher, et al. 1987).
Also known as acoustic neuroma or neurinoma, the term vestibular schwannoma has been proposed as the preferred term since most arise from the neurolemmal sheath of the superior division of the vestibular nerve (Eldridge and Parry 1993).
For the treatment of patients with vestibular schwannoma there are several options including observation, resection, stereotactic radiosurgery, and fractionated stereotactic radiotherapy. Many patients choose between stereotactic radiosurgery and resection based on their own specific goals and their understanding of possible results (Kondziolka, et al. 2003).
Cushing was the first to reduce surgical mortality rates (from 50% to 11%) by performing subtotal intracapsular removal of the tumor (Gormley, et al. 1997).