听神经瘤占颅内肿瘤5～10%,占小脑桥脑角肿瘤约80～90%。据Crowe与Hardy在1936年从未加选择的250例尸检中发现有4例深藏在内听道内的小型听神经瘤,这些病例在生前均无症状,故在常规尸检中多被忽略,估计在临床上,早期听神经瘤被忽略的情况也是不少的,因此其实际发病率肯定要比目前统计的数字为高。在相当长时间内,由于听神经瘤未能早期作出诊断,往往在手术治疗时,肿瘤已长 Acoustic neuroma accounts for 5 to 10% of intracranial tumors, accounting for about 80 to 90% of cerebellar pons in the brain tumors. According to Crowe and Hardy in 1936 an unselected 250 autopsy found in 4 cases of small acoustic nerve tumors hidden in the internal auditory canal, these cases were asymptomatic in life, so in the regular autopsy are mostly ignored, it is estimated that at Clinically, early acoustic neuroma is neglected a lot, so its actual incidence must be higher than the current statistics. For quite a long period of time, because of acoustic neuroma failed to make an early diagnosis, often in the surgical treatment, the tumor has been long