听神经瘤为桥脑小脑角区最常见的良性肿瘤,占桥脑小脑角区肿瘤的80%~90%,颅内肿瘤的8%~10%[1]。本病源于第Ⅷ对脑神经鞘膜,其中绝大多数来自前庭神经。听神经瘤分为散发型和遗传型,散发型多为单侧发病,遗传型往往双侧发病,并伴有其他周围和/或中枢神经系统多发性肿瘤,为常染色? Acoustic neuroma is the most common benign tumor in the cerebellopontine angle, accounting for 80% to 90% of pontine cerebellar angle tumors and 8% to 10% of intracranial tumors [1]. The disease from the first Ⅷ of the brain nerve sheath, most of which come from the vestibular nerve. Acoustic neuroma is divided into sporadic and genetic type, sporadic mostly unilateral disease, genetic type often bilateral disease, and accompanied by other peripheral and / or central nervous system multiple tumors, is often stained?