Pseudoaneurysm of the descending aorta complicating an untreated aortic coarctation.

A 22-year-old man was referred for severe aortic coarctation. Contrast-enhanced computed tomography confirmed the aortic coarctation diagnosis and showed an aortic pseudoaneurysm arising from the anterior and left surface of the descending aorta, communicating with the aortic lumen with a small neck. Under cardiopulmonary bypass through the femoral vessels, the patient underwent closure of the pseudoaneurysm neck using a synthetic patch and interposition of a prosthetic graft between the left subclavian artery and the descending aorta below the pseudoaneurysm. The patient's postoperative course was uneventful.