第十三節(jié) 聽(tīng)神經(jīng)瘤
內(nèi)分泌

        聽(tīng)神經(jīng)瘤是指起源于聽(tīng)神經(jīng)鞘的腫瘤(圖5-11),多源于第Ⅷ對(duì)腦神經(jīng)內(nèi)耳道段,亦可發(fā)自內(nèi)耳道口神經(jīng)鞘膜起始處或內(nèi)耳道底。聽(tīng)神經(jīng)瘤極少真正發(fā)自聽(tīng)神經(jīng),而多來(lái)自前庭上神經(jīng),其次為前庭下神經(jīng),一般為單側(cè),兩側(cè)同時(shí)發(fā)生者較少,是顱    （共 1305 字）     [閱讀本文] >>