A.0.1% B.1% C.4% D.10% E.15%
A.最常見的原發(fā)部位是內聽道段前庭神經(jīng)的神經(jīng)膜細胞(Schwann細胞) 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.40%~50% B.50%~60% C.60%~70% D.70%~80% E.50%~90%