Figure 3

MR scan demonstrating massive left cervical aortic arch aneurysm (LCAAA) arch aneurysm arising between the origins of left common carotid artery (LCCA) and left subclavian artery (LSA). LCCA is displaced anteriorly and LSA posteroinferiorly into left chest. Also note the redundancy of distal arch with more than 7.5 cm separation between LCCA and LSA. Ascending aorta (AA) is normal-sized and the right subclavian artery (RSA) arises normally.