Coarctation of the aorta in an adult with a concurrent large-size aortic arch aneurysmPing Zhang1, Dou Yuan2*1Department of Cardiology, West China Hospital, Sichuan University, Guoxuexiang 37th, 610041 Chengdu, Sichuan, P.R. China2Department of Cardiovascular Surgery, Cheng Du Shang Jin Nan Fu Hospital, West China Hospital of Sichuan University, Chengdu, Sichuan, China.* corresponding author：Dou Yuan