Right aortic arch with isolation of the left subclavian artery and bilateral patent ductus arterioses.

Of the right aortic arch anomalies, a right arch with isolation of the left subclavian artery is the least common. In a neonate who had a right arch with isolation of the left subclavian artery and bilateral patent ductus arterioses, pulmonary artery steal phenomenon developed after ligation of the right ductus. We performed division of the left ductus and reimplantation of the left subclavian artery into the left common carotid artery.