SP Robotic Versus VATS Anatomical Pulmonary Resection for Patients With NSCLC

Inclusion Criteria: * Candidate for anatomical pulmonary resection (segmentectomy or lobectomy) via minimally invasive thoracic surgery (RATS or VATS) for patient with non-small cell lung cancer or suspected malignant lesion. * Age ≥ 18 years * Patients who can comply with the requirements of the clinical trial and who, or their legal representatives, provide written consent before the start of the clinical trial * Patients with the nationality of South Korea * American Society of Anesthesiologists score 1-3. * Clinical stage I, II or IIIa non-small cell lung cancer (NSCLC) Exclusion Criteria: * Patients who require surgery for accompanying other organ diseases * Tumor invasion into the chest wall, diaphragm, another lobe or diaphragm * Patients who are considered unsuitable based on the researcher's judgment * Patients with cognitive impairments who are unable to understand the instructions and informed consent of this study * Patients who specifically desire a certain surgical method (robotic, thoracoscopic, open thoracotomy) * Patients who previously undergone a thoracic surgical procedure in the hemithorax to be operated on * Pathological results other than NSCLC (ex, benign nodules, metastatic lung cancer, SCLC) * Patients who received neoadjuvant therapy. * Candidate for pneumonectomy, bilobectomy, lobectomy plus segmentectomy, non-anatomic resection (ex, wedge resection). * History of other cancers in the past 5 years.