Objective To evaluate the efficacy and safety of video-assisted thoracoscopic surgery( VATS) in the treatment of clinical stage Ⅰ non-small cell lung cancer( NSCLC). Methods 185 patients with stage Ⅰ NSCLC who underwent lobectomy in our hospital were retrospectively analyzed. The patients were divided into VATS lobectomy group( the VATS group) and Conventional lobectomy group( the thoracotomy group) according to different surgical methods. The clinical data,disease-free survival( DFS) and overall survival( ...