A case of the incomplete double aortic arch diagnosed in adulthood by MR imaging.

Double aortic arch is a rare vascular anomaly, particularly in adults. Most of patients were infants or children. In this report we describe a case of the incomplete double aortic arch in a 55 years old woman complaining of esophageal symptoms was found by esophagography and examined by MR imaging. This anomaly had double aortic arch with partial atresia of the left arch. The right common carotid artery (RCCA) and the right subclavian artery (RSA) arose from the large right aortic arch (RAA). The left common carotid artery (LCCA) and subclavian artery (LSA) arose from the left aortic arch (LAA). Aortic diverticulum was detected at the interior site of the descending aorta connected with the left subclavian artery (LSA). The mediastinal organs were surrounded by the vascular ring (RAA, LAA, LSA and aortic diverticulum).