Open insufflation: a novel technique for identifying the intersegmental border.

Segmentectomy is gaining popularity for the treatment of lung cancer, especially in the early stages. Comprehensive understanding of segmental and subsegmental anatomy is required for the procedure to be successfully completed from a technical and oncological point of view. We hereby present a novel technique for delineating the intersegmental border, which can be widely reproduced because it is not time-consuming and does not require special equipment.