原发性气管癌是指原发于环状软骨下缘至隆突间的气管恶性肿瘤 ,不包括肺、支气管癌等浸润到隆突或气管者。原发性气管癌少见 ,且早期无特征性临床表现 ,常规X线检查难于发现 ,易误诊误治。为提高原发性气管癌的诊断水平 ,我们对 1 985年 1月～ 2 0 0 2年 1 2月误诊的 1 2例原发 Primary tracheal cancer is the primary malignant trachea between the lower edge of the ring-shaped cartilage and the protuberance, excluding the infiltration of the lungs, bronchial carcinoma, etc. into the carina or trachea. Primary tracheal cancer is rare, and no early clinical manifestations, routine X-ray examination is difficult to find, easy misdiagnosis and mistreatment. In order to improve the diagnosis of primary tracheal carcinoma, we retrospectively analyzed 12 cases of misdiagnosed cases from January 1, 1985 to February 2002