Robotic Portal Segmentectomy in the Right Middle Lobe After Right Upper Lobectomy

Although segmentectomy is the standard surgical procedure for small-sized peripheral non-small cell lung cancer, reports on segmentectomy for right middle robe are rare because of the anatomical feature. We report a case of an 81-year-old woman with a history of left S4 segmentectomy, left basal segmentectomy, and right upper lobectomy for multiple primary lung cancer with a part solid nodule in S4a. Owing to the increased volume of the right middle lobe following a right upper lobectomy, a right S4 segmentectomy was performed. In patients with a large right middle lobe or dilated resulting from a previous lung resection, segmentectomy is an option for preserving the lung parenchyma.