Resection of Kommerell Diverticulum After the Arterial Switch for TGA With Bilateral PDAs and Right Aortic Arch

We present a very rare case of bilateral ductus arteriosus in transposition of the great arteries with right aortic arch and aberrant retroesophageal left subclavian artery (SCA). Around 1 month after the successful arterial switch operation, the baby showed wheezing and retractive breathing. The computed tomography revealed that trachea and esophagus were sandwiched between the posterior displaced ascending aorta and the origin of the retroesophageal aberrant left SCA, the so-called Kommerell diverticulum (KD). This compression was successfully relieved by resection of the KD and division of the retroesophageal aberrant SCA through right thoracotomy.