成人发生脑干肿瘤病较少见,对于不典型者易误诊。我院四年间有4例成人脑干肿瘤误诊为多发性硬化症(MS),后经CT证实为脑干肿瘤。为提高不典型脑干肿瘤诊断率,分析其误诊原因。临床资料例1:男,36岁。于1984年3月自觉双下肢力弱,走路欠稳,下楼梯有前冲感,时有头晕、耳呜。症状恒定不变。至1985年5月觉右面部麻木, Brain stem disease occurred in adults is rare, atypical misdiagnosis. Four cases of misdiagnosis of adult brain stem tumors as multiple sclerosis (MS) in our hospital over four years, confirmed by the CT as a brain stem tumor. To improve the diagnosis of atypical brainstem tumors, analyze the causes of misdiagnosis. Clinical data Example 1: Male, 36 years old. In March 1984 consciously lower limb weakness, walking is not stable, down the stairs have a forward feeling, sometimes dizzy, tinninia. The symptoms are constant. May 1985 May feel the right facial numbness,