Fig. 2

Contrast thoracic computed tomography shows the patient’s cardiothoracic anatomy before lung transplantation. A Patent ductus arteriosus (approximately 1.1 cm in diameter) identified between the aneurysmal main pulmonary artery and the descending aorta. B Axial view of thoracic computed tomography reveals patent ductus arteriosus between the main pulmonary artery and the descending aorta. Arrows indicate several collateral branches of bilateral pulmonary arteries (approximately 4–5 mm in diameter). C Maximum diameter of the aneurysmal main pulmonary trunk is 10.9 cm. The Arrows indicate several collateral branches of bilateral pulmonary arteries (approximately 4–5 mm in diameter). D Arrows indicate bilateral major aortopulmonary collateral arteries (MAPCAs) from the descending aorta (approximately 2–4 mm in diameter)