早期颅内转移的X线平片隐性肺癌临床诊断较难。我们遇到11例因中枢神经系统症状就诊,脑CT示脑转移瘤,肺部X线正、侧位平片阴性,最后经有关检查确诊为原发性肺癌的病人,分析如下。临床资料11例病人均为男性,年龄55～73岁,平均63.7岁,全部经细胞学检查,其中小细胞未分化癌6例,腺癌4例,鳞癌1例。所有病人就诊时均以神经系统症状为主,其中头痛8例,呕吐4例,视力下降3例,偏瘫2例,精神异常1例,眩晕、共济失调4例,3例伴咳嗽、轻度胸痛。10例颅内转移部 The early diagnosis of hidden lung cancer with X-ray in early intracranial metastases is difficult. We encountered 11 cases of central nervous system symptoms, brain CT showed brain metastases, lung X-ray positive, lateral plain film negative, and finally diagnosed as a primary lung cancer patient, the analysis is as follows. Clinical data 11 patients were male, aged 55 to 73 years old, average 63.7 years old, all were cytological examination, including 6 cases of small cell undifferentiated carcinoma, 4 cases of adenocarcinoma, 1 case of squamous cell carcinoma. All patients presented with nervous system symptoms, including 8 headaches, 4 vomiting, 3 eyesight loss, 2 partial paralysis, 1 mental disorder, 4 dizziness, ataxia, 3 cough, mild Chest pain. 10 cases of intracranial metastases