A.<1.5cm B.<2cm C.<2.5cm D.<3cm E.<3.5cm
A.0.1% B.1% C.4% D.10% E.15%
A.最常見(jiàn)的原發(fā)部位是內(nèi)聽(tīng)道段前庭神經(jīng)的神經(jīng)膜細(xì)胞(Schwann細(xì)胞) B.約2/3來(lái)自前庭上神經(jīng) C.1/3來(lái)自前庭下神經(jīng) D.起源于耳蝸神經(jīng)和面神經(jīng)者罕見(jiàn) E.以上均正確