听神经瘤几乎都是生长在桥小脑角,发生于中颅凹底者罕见。现将经手术及病理证实1例报告如下。病人,男,65岁。因右侧耳鸣、听力下降,继而有耳痛伴间断性头痛3年,经耳科检查诊为右中耳内肿物而行手术切除。病理诊断为神经纤维瘤。术后因仍有头晕、右侧耳聋及同侧面神经麻痹而再次就诊。查体:右眼睑不能闭合。右侧鼻唇沟变浅,口角左斜。右耳听力消失,Rinne氏试验示右侧骨导大于气导,Weber氏试验偏向左 Acoustic neuromas are almost always grown in the bridge cerebellar angle, occurred in the middle of the concave cranial are rare. Now confirmed by surgery and pathology are reported as follows. Patient, male, 65 years old. Due to the right side of the tinnitus, hearing loss, followed by earache with intermittent headache for 3 years, the ear examination for the diagnosis of right middle ear surgery and surgical excision. Pathological diagnosis of neurofibromas. After surgery because there is still dizzy, deafness and ipsilateral right paralysis and seek treatment again. Physical examination: right eyelid can not be closed. Right nasolabial fissure shallow, diagonal left oblique. Right ear hearing loss, Rinne’s test showed that the right side of the bone conduction greater than air conduction, Weber’s test bias to the left