A.0.1% B.1% C.4% D.10% E.15%
A.最常見的原發(fā)部位是內(nèi)聽道段前庭神經(jīng)的神經(jīng)膜細(xì)胞(Schwann細(xì)胞) B.約2/3來自前庭上神經(jīng) C.1/3來自前庭下神經(jīng) D.起源于耳蝸神經(jīng)和面神經(jīng)者罕見 E.以上均正確
A.1%~5% B.5%~10% C.10%~15% D.15%~20% E.2U%~3U%