How should we treat uncomplicated subacute type B aortic dissection in octogenarians?

Preemptive thoracic endovascular aortic repair (TEVAR) is an advanced treatment that has possibility to improve late outcomes in patients with subacute type B aortic dissection. However, it may not be the treatment of choice for elderly patients with uncomplicated subacute type B aortic dissection because of their inherent frailty and increased risk of periprocedural complications. Data were collected between July 2004 and October 2017 in Yamagata university hospital and between February 2016 and May 2018 in Nihonkai General hospital. A total of 152 medically treated subacute type B aortic dissection patients were enrolled in this study. Patients were divided into two groups: age 80 year and older group (Group O, n = 33, 22%) and a group