结核性脑膜炎(结脑)是我国的常见病,病死率也较高,国内的病死率在15％左右,我院成人结脑的病死率高达20％。究其原因,大多为确诊过晚,治疗太迟之故,不典型结脑更显著。不典型结脑是与典型结脑相对而言,指临床表现或脑脊液(CSF)改变不典型,易被误诊的脑膜炎。近年来不典型结脑患者有所增加,占结脑的1/5,亦 Tuberculous meningitis (tuberculous meningitis) is a common disease in our country, the case fatality rate is high, the domestic case fatality rate is about 15%, our hospital adult tuberculosis fatality rate as high as 20%. The reason, mostly diagnosed too late, treatment is too late therefore, atypical nodules more pronounced. Atypical tuberculous compared with the typical tuberculous meningitis, refers to the clinical manifestations or changes in cerebrospinal fluid (CSF) is not typical, easily misdiagnosed meningitis. In recent years, patients with atypical nodules have increased, accounting for 1/5 of the brain, also