Type A aortic dissection, right-sided aortic arch, and thoracic aortic aneurysm.

A previously healthy 78-year-old woman presented with severe chest pain. Computed tomography revealed a right-sided aortic arch with an aberrant left subclavian artery originating from Kommerell's diverticulum, a thoracic aortic aneurysm, and Stanford type A acute aortic dissection. Successful emergency repair of the ascending aorta, total arch, and descending aorta were performed through a median sternotomy only.