Patent ductus arteriosus, large right pulmonary artery and brachiocephalic trunk variations. A case report.

Aortic arch anomalies occur due to disorders of the development of primitive double aortic arch system. In this study a patent ductus arteriosus, which had the appearance of a muscular type artery, was observed in addition to an enlarged right pulmonary artery with a diameter of 2.4 cm, causing thickening to right ventricular wall. A left common carotid artery arising from the brachiocephalic trunk was also observed. Such a complicated variation is extremely rare.