本例原发小脑脑桥角的中枢神经系统淋巴瘤到目前为止是首例。患者82岁女性。主诉一个月前发现左耳听不到手表声,发展到电话声也听不到,疼痛从耳部放射到颈部,左眼不能闭合。检查发现左面部肌张力减少50%,左耳重度感音神经性聋。头颅体层X线正常,CT发现耳门后缘有一个直径6～8 mm模糊密度带,椎管内空气造影在耳门处看来像一个梭形神经血管丛。曾怀疑为转移瘤,但胸片、钡灌肠、甲状腺扫描、乳房X线片、唾液细胞学分析均未发现原发病灶,颅底分层X线片正常。奇怪的是患者住院期间面 This case is the first case of central nervous system lymphoma in the primary cerebellar pons. 82-year-old woman. One month before the chief complaint, he found that the left ear could not hear the watch sound, and the development of the telephone sound could not be heard. The pain radiated from the ear to the neck and the left eye could not be closed. Examination revealed a 50% decrease in left facial muscle tone and severe sensorineural hearing loss in the left ear. The head skull X-ray is normal, and CT has found a 6-8 mm diameter fuzzy density band on the posterior edge of the ear, and the intraspinal air radiography looks like a fusiform neurovascular plexus at the ear. The tumor was suspected to have metastases, but primary lesions were not found on chest radiographs, barium enema, thyroid scans, mammograms, and salivary cytology analysis. X-ray films of the skull base were normal. The strange thing is that during the hospitalization of patients