癌肉瘤是一种混合性恶性肿瘤,成分包含癌和肉瘤2种,肺部比较少见,临床诊断肺癌肉瘤时,难度比较大,存在一定的误诊率。近年来,在组织病理学及临床诊断上,接受已经比较普遍,但对于其发生来源、发病机制,组织尚未明确阐释。在肺部恶性肿瘤中,癌肉瘤的发病率约占0.3%~0.36%。本研究以中国人民解放军第四七六医院近期收治1例肺癌肉瘤患者 Carcinosarcoma is a mixed malignant tumor composed of two types of cancer and sarcoma, the lungs are relatively rare, clinical diagnosis of lung cancer, the more difficult, there is a certain misdiagnosis rate. In recent years, histopathology and clinical diagnosis, the acceptance has been relatively common, but its origin, pathogenesis, organization has not yet been clearly explained. In pulmonary malignancies, the incidence of carcinosarcoma accounts for about 0.3% to 0.36%. In this study, one of the patients with lung cancer and sarcoma was admitted to the 476th Hospital of People’s Liberation Army