A Trial on Video-assisted Thoracoscopic Surgery and Axillary Thoracotomy for Resection of Early-stage Non-small Cell Lung Cancer

Inclusion Criteria: * Early stage NSCLC and no metastasis of hilum of lung and mediastinum lymph nodes (short diameter ≤ 1 cm) on computed tomography (CT) scan; * No medical contraindications to lung resection * Age ≤ 75 years old and ≥18 years old; * Sign the informed consent form. Exclusion Criteria: * Evidence of invasion into neighboring organs; * Extensive pleura adhesion; * Central lesion; * Not suitable for single-lung ventilation; * Had history of thoracotomy and radiation for thoracic region ; * Pregnancy or lactation female patients; * Cannot sign the informed consent form because of psychological, family and society factors; * Had history of other malignant tumors within 5 years except for non-melanoma cutaneous cancer, uterine cervix cancer in situ and curative early-stage carcinoma of prostate; * Participants can not accept operation for other uncontrolled factors.