支气管肺癌的临床症状典型时容易诊断，但有时表现复杂，易于误诊，现报告１８例肺癌的特殊表现。１ 临床资料 １８例中，男１３例，女５例。年龄３３～６７岁，平均年龄５４．７岁。吸烟１２例，不吸烟６例。误诊时间最长半年，最短２０天，均经胸片、ＣＴ、纤支镜病理检查确 The clinical symptoms of bronchogenic carcinoma are easily diagnosed, but sometimes the performance is complicated and it is easy to be misdiagnosed. The special manifestations of lung cancer are now reported in 18 cases. 1 Clinical data 18 cases, 13 males and 5 females. Age 33 to 67 years, mean age 54.7 years. There were 12 cases of smoking and 6 cases of no smoking. The misdiagnosis time is up to six months and the shortest 20 days are confirmed by chest X-ray, CT, and bronchoscopy.