Pulmonary Artery Compression Facilitates Intersegmental Border Visualization

Abstract Intravenous indocyanine green (ICG) injection is useful for the identification of the intersegmental border by infrared thoracoscopy during anatomical segmentectomy. However, we encounter cases in which visualization of the intersegmental border is difficult. In particular, ICG fluorescence in the upper lobe is occasionally obscured due to the relatively smaller blood flow in the upper lobe pulmonary arteries. Herein, we report an interlobar pulmonary artery compression method, which is a simple and effective technique for clearly visualizing the intersegmental border via infrared thoracoscopy with ICG during upper lobe segmentectomy.