Abstract
A 57-year-old woman who had undergone replacement of the ascending aorta more than 20 years ago previously complained of abdominal pain. Computed tomography revealed a giant retrosternal anastomotic aneurysm, for which we decided to perform urgent surgery. Cardiopulmonary bypass was established and cooling was started before resternotomy. Use of aortic occlusion catheter and left ventricle vent kept the surgical field clear. We completed the reconstruction of the ascending aorta safely.