Management of type 2 endoleaks following endovascular thoracic aortic dissection repair associated with patent ductus arteriosus: A report of two cases in patients with Marfan syndrome.

Type 2 endoleaks remain a significant clinical concern after thoracic endovascular aneurysm repair, potentially leading to aneurysm sac enlargement or rupture. A rare but clinically significant source of these endoleaks is patent ductus arteriosus (PDA). This article presents two unique cases of aortic dissection with an associated PDA. It reviews the limited available literature to comment on the background, pathophysiology, presentation, diagnostic evaluation, and management strategies of PDA-associated type 2 endoleaks after thoracic endovascular aneurysm repair.