Fig. 4
Schematic representations of surgical treatment A Before treatments, blood flow from systemic arteries to the left apical segmental pulmonary artery of the left lower lobe (Lt. A6) is active. B After embolization of two intercostal arteries and left thyrocervical artery, blood flow from the pulmonary artery was maintained. C After ligation of the left apical segmental pulmonary artery of the left lower lobe (Lt. A6), the blood flow from both sides were completely blocked