[Lung carcinosarcoma--a report of 15 cases].

Lung carcinosarcoma is a rare pulmonary mixed malignant tumor. From November 1979 to Sept. 1992, among 4251 cases of pulmonary malignant tumor operated in our department 15 were lung carcinosarcoma (0.35%). Pneumonectomy was done in 6 patients, lobectomy in 8, thoacotomy in 1. Pathologically, squamous carcinoma with fibrosarcoma was observed in 4, squamous carcinoma with chondrosarcoma in 1, squamous carcinoma with pleomorphic sarcoma in 1, adenocarcinomma with fibrosarcoma in 7, adenocarcinoma with chondrosarcoma in 1, and small-cell carcinoma with chondrosarcoma in 1. There was no operation death. Upon follow up, the 1-, 3-, 5-, and 7-year survival rates were 66.7%, 53.3%, 42.9% and 2/7, respectively. The longest survival was 97 months. The histologica origin, the relationship between pathological findings and clinical features and the diagnosis, treatment and prognosis are discussed.