[A successful surgical treatment of traumatic dissecting aneurysm].

Dissecting thoracic aortic aneurysm caused by blunt trauma was reported. A 64-year-old woman involved in automobile accident was transported to our hospital. Chest X-ray showed multiple rib fractures and enlargement of mediastinal shadow. Emergent CT scan and angiography (DSA) revealed aortic dissection (DeBakey IIIb). She suffered from acute renal and respiratory failure soon after admission, but underwent operation 6 months after the trauma because of enlargement of false channel. Graft replacement was performed and postoperative course was uneventful. Histopathologic findings showed dissection of adventitia of the aorta.