False Aneurysm Formation at Both Anastomotic Sites after Descending Aortic Replacement for Aortic Coarctation.

Prosthetic graft interposition is performed in some patients with coarctation of the aorta (CoA), and all procedures for treating CoA are associated with a risk of aneurysm formation at the site of repair. A 53-year-old woman underwent coarctectomy and descending aortic replacement with a 16-mm Dacron graft for CoA when she was 18 years old. Thirty years later, she was referred to our hospital for a false aneurysm at the proximal anastomotic site, and total arch replacement was performed to resect the false aneurysm. One year after the operation, follow-up computed tomography revealed a dissecting aneurysm on the descending aorta, originating from the distal anastomotic site, namely the first 16-mm Dacron graft and the native descending aorta. The length between the branch of the arch graft and the dissecting aneurysm was adequate for endovascular repair, which was successfully performed.