脑膜癌是指颅外癌肿向脑膜弥漫性转移而脑实质内无转移的一类具有特殊临床表现的疾病。临床确诊较困难,影像学检查常无异常表现,而脑脊液细胞学检查对本病有独特的诊断价值。本文对近几年烟台毓璜顶医院经脑脊液细胞学检查确诊的5例脑膜癌病分析如下。1　临床资料1.1　一般资料 Meningeal carcinoma refers to a type of disease with a special clinical manifestation, in which the extracranial tumor diffuses into the meninges and there is no metastasis in the brain parenchyma. Clinical diagnosis is difficult, and imaging findings often have no abnormal findings. CSF cytology tests have unique diagnostic value for this disease. In this paper, the analysis of 5 cases of meningeal carcinoma diagnosed by cerebrospinal fluid cytology in Yantai Yuding Hospital in recent years is as follows. 1 Clinical data 1.1 General information