Coronal section of thoracic computed tomographic angiography image showing an anatomical relationship between the left pulmonary artery and aberrant left subclavian artery, patent ductus arteriosus, Kommerell diverticulum. (A) Aberrant left subclavian artery, (B) Kommerell diverticulum, (C) patent ductus arteriosus, and (D) left pulmonary artery.