Thoracoscopic Anatomic Segmentectomy Techniques for Rare Medial-Basal Segment (S7) Variants.

The medial-basal segment (S7) is the smallest of all the pulmonary segments and exhibits significant anatomic complexities. The procedures adopted to perform anatomic S7 segmentectomy differ according to branching pattern as the B7 may show 3 types. Although some studies have reported surgical procedures for thoracoscopic segmentectomy of the S7 and its anatomic variants, this type of segmentectomy remains challenging. Herein, we present a unique segmentectomy technique for rare S7 variants.