Chimney Stent-Graft Repair for Concurrent Inferior Mesenteric Artery Aneurysm and Infrarenal Abdominal Aortic Aneurysm: Case Report

To report a rare case of concurrent inferior mesenteric artery (IMA) aneurysm and infrarenal abdominal aortic aneurysm (AAA) with a novel indication for the use of chimney stent-graft technique in this patient. An 82-year-old man with an asymptomatic 4.4-cm fusiform AAA and 3.6-cm IMA aneurysm, coupled with chronic occlusion of celiac artery and superior mesenteric artery at the ostia, underwent endovascular repair of both aneurysms. Preservation of the IMA and treatment of both aneurysms were achieved with IMA aneurysm stenting, aortic aneurysm stenting and IMA chimney stenting. At 1, 6, and 12 months surveillance, the grafts remained patent without endoleak. The IMA chimney with aortic stenting technique may be safely used in patients who require preservation of the IMA during AAA and IMA aneurysm repairs.