Uniportal VATS combined subsegmentectomy of the left S1+2c+S3a guided by 3D computed tomography simulation.

When a tumor to be resected is located close to or extending beyond the intersegmental plane, combined segmentectomy or subsegmentectomy is an option to ensure a sufficient surgical margin. The segmental and subsegmental anatomy of the lungs varies greatly from case to case. Therefore, there is no standardized procedure for combined subsegmentectomy, and surgical planning based on individual anatomy using three-dimensional computed tomography is essential. This video tutorial presents the surgical technique for uniportal video-assisted thoracic surgery of the left S1+2c+S3a combined subsegmentectomy for tumors located at the border of the S1+2c and S3a segments of the left upper lobes, with preoperative three-dimensional simulation and intraoperative navigation images.