Abstract
Blunt traumatic aortic dissection is a potentially life-threatening situation. We report a 72-year-old woman with traumatic aortic dissection from a traffic accident 5 years previously. She underwent conservative therapy because of the absence of mediastinal hematoma, enlargement of the descending aorta, or multiple injuries such as cerebral bleeding, rib fracture, and lung laceration. During follow-up for 6 years, the descending aorta enlarged from 35 mm to 55 mm in diameter on computed tomography. We performed graft replacement of the descending aorta under femoro-femoral venoarterial cardiopulmonary bypass. The pathological specimen from the aorta demonstrated a dissecting aneurysm, not a pseudoaneurysm. The postoperative course was uneventful without any complication.