Right cervical aortic arch is a rare malformation in which a right-sided aortic arch is unusually long, forms a loop, descends, and crosses behind the oesophagus to continue as a left descending aorta. We present a case of right cervical aortic arch associated with anomaly of epiaortic vessels and aortic obstruction, surgically treated with extra-anatomic bypass graft between ascending and descending aorta.

Interrupted aortic arch is a rare congenital anomaly in newborns and infants and is commonly associated with other cardiovascular anomalies. Here, we report an unusual case of type A interrupted cervical aortic arch associated with long segment coarctation of the descending thoracic aorta. Patent ductus arteriosus reconstituted the descending thoracic aorta. Proximal segments of the left common carotid and left subclavian arteries were atretic. Echocardiography-gated multidetector CT angiography not only identified the type of aortic arch interruption in the neonate but also delineated the exact anatomical details.

We report here a patient with right cervical arch and anomalous origin of the left subclavian artery from the diverticulum of Kommerell. This uncommon abnormality can give rise to symptoms due to compression of the trachea and esophagus. Unlike right aortic arch with mirror image pattern of branching, however, this abnormality is seldom associated with intracardiac defects. Most patients are asymptomatic, and surgery is indicated only if severe symptoms are present.