原发性气管癌常因误诊而失去早期治疗时机，现将收治的6例患者误诊原因分析如下。1临床资料1．1一般资料男3例，女3例；年龄40～69岁，平均53．6岁。1．2临床表现干咳、呼吸困难、气喘6例，痰中带血丝3例；紫绀3例；进行性呼吸困难2例，伴吼鸣音2例。1．3误诊疾病很炎、支气管 Primary tracheal cancer often loses the opportunity for early treatment due to misdiagnosis. The reasons for misdiagnosis of the 6 patients undergoing treatment are analyzed as follows. 1 Clinical data 1.1 General information 3 males and 3 females; aged 40 to 69 years, mean 53.6 years old. 1.2 clinical manifestations of dry cough, dyspnea, asthma in 6 cases, blood stained sputum in 3 cases; cyanosis in 3 cases; 2 cases of progressive dyspnea, accompanied by phlegm in 2 cases. 1.3 misdiagnosis of the disease is very inflammation, bronchi