听神经瘤常与桥小脑角脑膜瘤、胆脂瘤相混。此外,还须与该部位的其他肿瘤如后颅窝型三叉神经鞘瘤、胶质瘤、脊索瘤、转移癌和血管母细胞瘤等相鉴别。迄今为止,听神经瘤误为鞍区肿瘤者,文献上尚未见有报道。我院遇二例,特报道如下。病历摘要例1.男,28岁,未婚,双眼视力进行性下降5年,半年来视力更差,仅有光感,近1月来有头痛。5年前曾有头部外伤史,当时有昏迷,伤后右耳失聪。头颅平片示蝶鞍轻度扩大,有普遍骨吸收及鞍背竖起感,故诊为鞍内肿瘤入院。入院检查:双眼视力仅有光感,视野测定为双颞偏盲,右耳全聋,Ⅴ、Ⅶ、Ⅸ、Ⅹ对颅神经正常,共济运动佳,双眼底视神经乳头继发性萎缩,余神经系统检查无特 Acoustic neuroma often with cerebellopontine angle meningioma, cholesteatoma mixed phase. In addition, with other parts of the tumor such as posterior fossa trigeminal schwannoma, glioma, chordoma, metastatic carcinoma and hemangioblastoma phase identification. So far, acoustic neuroma mistaken for the saddle area tumor, the literature has not been reported. Two cases of my hospital, especially reported as follows. Summary of medical records 1. Male, 28 years old, unmarried, binocular vision decreased 5 years, worse visual acuity for six months, only a sense of light, nearly a month to have a headache. There was a history of head trauma 5 years ago when there was a coma and deafness on the right ear. Skull plain showed a slight increase in sella, there are common bone resorption and saddle back sense, so the diagnosis of intra-saddle tumor hospitalization. Admission examination: binocular visual acuity only sense of vision was determined as bilateral temporal blindness, right ear, total deafness, â ... ¢, â ... ¡, â ... ¡, â ... ¡, â ... ¢ normal cranial nerves, good atmaclava, binocular secondary optic nerve papilla secondary atrophy, System check no special