[Emergent ascending and arch replacement for acute type A aortic dissection with anomalies of the aortic arch].

We experienced 4 cases that had to be performed emergent ascending and arch replacement for acute type A aortic dissection with anomalies of the aortic arch (aberrant right subclavian artery in 2 case and isolated left vertebral artery in 2 cases). As for the aberrant right subclavian artery, preoperative diagnosis is possible by CT scan. We must not overlook aberrant right subclavian artery in order to prevent brain complication in emergency arch replacement for acute type A aortic dissection. For the isolated left vertebral artery, incision of the aortic arch is recommended for its reconstruction.