Objective.The effectiveness of surgical resection of adenosquamous carcinoma of the lung remains poorly defined because of the histology’s relatively low frequency

the failure in most published series to separate adenosquamous carcinoma from the other variants of non-small cell lung carcinoma.To define the effectiveness of surgical treatment of adenosquamous carcinoma

we have retrospectively reviewed our hospital experience over a 12-year period. Methods.Retrospectively reviewed 22 cases of adenosquamous carcinoma who were surgically treated

except one patient

in the PUMCH from Jan.1985 to Aug.1997.This series constitutes the 19% of a total of 1 245 patients with all types of surgical treatment for the primary lung cancer during the same time. Results.The adenosquanous carcinoma was mostly presented in the old patients with a mean age of 60 years and mostly located in the peripheral of lung（n=20）.The overall 5-year survival was 23%.Those with stage Ⅰ tumors survival was only 18%（n=13）

stage Ⅱ 5%. The survival in stage Ⅲ tumors was not longer than 25 months and in stage Ⅳ survival was not longer than 12 months. Conclusion.Our results suggest that adenosquamous carcinoma of lung was a virulent tumor

which exhibited highly aggressive biological behavior with early lymph nodes metastasis（46%） and its prognosis was worse than that of both squamous cell carcinoma and adenocarcinoma.