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Objective: Adenosquamous lung carcinoma (ASC) is a rare type of lung cancer by being histologically mixed adenocarcinoma and squamous cell carcinoma and is very aggressive with a poor prognosis.This study aimed to characterize clinicopathological features and prognosis of 59 Chinese ASC patients.Method:A total of 59 histologically diagnosed ASC were extracted from a series of 2531 lung cancer patients after surgery between January 2000 and June 2012.The clinicopathological features and follow-up data were collected and analyzed statistically.