Case series with 31patients with ruptured descending thoracic aortic aneurysmstreated by stent graft at Vascular Surgery department, Cho Ray hospital from 05/2012 to 12/2019.Results: 31patients were treated with stent graft for ruptureddescending thoracic aneurysms The mean age was 64± 15, 1, 80, 7% were men, mean follow-up time was 18, 6months.