Inferior mesenteric artery aneurysm revealed by massif rectal bleeding, case report

Successful surgical management of a suspected high-flow inferior mesenteric artery aneurysm in a patient with chronic celiac and superior mesenteric artery occlusions

Inferior mesenteric artery (IMA) aneurysms account for approximately 1% of visceral artery aneurysms and can occur secondary to high flow because of occlusive disease in other mesenteric arteries. We describe the case of a 79-year-old man who presented with a 3.3-cm IMA aneurysm and chronic total occlusions of the celiac artery and superior mesenteric artery (SMA). After an unsuccessful attempt at endovascular SMA recanalization, he underwent an uncomplicated retrograde aorta to SMA bypass and antegrade aorta to IMA bypass. We propose that an aorta to IMA bypass after SMA revascularization is safe and effective to treat suspected high-flow IMA aneurysms.

Endovascular management of colic artery pseudoaneurysm: A case report of successful intervention in a 59-year-old male with abdominal hematoma

Visceral artery pseudoaneurysms, including inferior mesenteric artery pseudoaneurysms, are rare, occurring at an estimated incidence of 0.01%-0.2%. The literature reports only around 60 cases of inferior mesenteric pseudoaneurysm to date. The management of this condition lacks a consensus; nevertheless, coil embolization remains the preferred approach for stable patients. Here, we present a unique clinical scenario involving a 59-year-old male who underwent exploratory laparotomy for a retroperitoneal hematoma. Subsequently, he was diagnosed with an inferior mesenteric pseudoaneurysm, specifically affecting the left colic artery, and successfully managed using coil embolization.