There is no surgery time difference between the groups with and without preoperative chemoradiotherapy (p>0.05, ttest) - Surgical complications: The rate of general complications 7.0%, including 1 patient (1.4%) with bleeding, 2 patients (2.8%) with thoracic tubes, 1 patient (1.4%) with tracheal injury and 1 patient (1.4%) with pulmonary tissue damage, 1 patient (1.4%) transferred to open surgery.