Inferior mesenteric artery aneurysm: case report and review of the literature

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.

Warfarin Overdose Associated Inferior Mesentery Artery Aneurysm Rupture Mimicking Spontaneous Bowel Hematoma

Inferior mesentery artery (IMA) aneurysm rupture is easily overlooked in patients with abdominal pain due to its uncommon occurrence. It may result in catastrophic consequence once misdiagnosed as spontaneous bowel hematoma in patients with anticoagulant overdose and intra-abdominal hematoma, as treatment strategy for both diseases varies differently. We present a case of a 70-year-old male who came to our emergency department with the chief complaint of abdominal pain over periumbilical area, eventually diagnosed as anticoagulant overdose associated IMA aneurysm rupture without occlusion of superior mesentery artery (SMA) and celiac artery (CA). This case report alerts us to consider the rare other source of bleeding, for instance ruptured inferior mesentery aneurysm, while encountering such an extraordinary large intra-abdominal hematoma in patients on anticoagulant.

Inferior Mesenteric Artery Aneurysm Complicated With Occluded Celiac and Superior Mesenteric Artery After Replacement of Thoracoabdominal Aorta for Chronic Dissected Thoracoabdominal Aortic Aneurysm

We report a case of inferior mesenteric artery aneurysm (IMAA) after the replacement of the thoracoabdominal aorta for a chronic dissected thoracoabdominal aortic aneurysm in which the celiac artery and superior mesenteric artery were occluded. We performed the resection of the IMAA and the revascularization of the superior mesenteric artery, inferior mesenteric artery, and meandering artery. The patient's postoperative course was uneventful, without bowel ischemia. From the findings of intraoperative flow measurement of the visceral arteries, revascularization of the superior mesenteric artery was judged to be appropriate in this situation.

Open and Endovascular Management of Inferior Mesenteric Artery Aneurysms: A Report of Two Cases

Inferior mesenteric artery (IMA) aneurysms are a rare entity, attributing to 1% of Splanchnic aneurysms (Edogawa S, Shibuya T, Kurose K et al. Inferior mesenteric artery aneurysm: case report and literature review. Ann Vasc Dis 2013;6:98-101), often found incidentally on evaluation for other intra-abdominal pathologies. Similar to other visceral arterial aneurysms, there is an estimated 20-50% risk of potentially fatal rupture and repair is generally recommended. We report 2 patients with IMA aneurysms, using them as cases to illustrate feasibility of both open and endovascular management options. Patient 1 is a 69-year-old male with bilateral claudication found to have an asymptomatic 20-mm IMA aneurysm. This patient underwent aortobifemoral bypass with branch polytetrafluoroethylene graft to distal IMA after excision of IMA aneurysm. Patient 2 is a 32-year-old male who underwent an ex vivo renal artery aneurysm repair and was noted on routine follow-up to have an incidental saccular 1.5-cm IMA aneurysm for which he underwent endovascular coil embolization. Both patients had an unremarkable postoperative course with a notable absence of stigmata of bowel ischemia.

Inferior mesenteric artery aneurysm: case report and literature review

An inferior mesenteric artery (IMA) aneurysm is the rarest among visceral artery aneurysms. A 69-year-old man was referred to our hospital with an asymptomatic IMA aneurysm associated with occlusion of the superior mesenteric artery (SMA) and celiac artery (CA). After revascularization of the SMA with an 8-mm expanded polytetrafluoroethylene (ePTFE) graft, the aneurysm was resected, and the IMA was reconstructed. The "jet disorder" phenomenon has been thought to cause an IMA aneurysm in the case of CA and SMA obstruction. We consider it better to revascularize not only an IMA but also an SMA or CA for preventing that phenomenon.

Acute retroperitoneal bleeding due to inferior mesenteric artery aneurysm: case report

Background

Visceral artery aneurysms (VAA), although uncommon, are increasingly being detected. We describe a case of spontaneous retroperitoneal hemorrhage from a ruptured IMA aneurysm associated with stenosis of the superior mesenteric artery (SMA) and celiac trunk, successfully treated with surgery.

Methods

A 65-year-old man presented with abdominal pain and hypovolemic shock. Abdominal CT scan showed an aneurysm of the inferior mesenteric artery with retroperitoneal hematoma. In addition, an obstructive disease of the superior mesenteric artery and celiac axis was observed.

Results

Upon emergency laparotomy a ruptured inferior mesenteric artery aneurysm was detected. The aneurysm was excised and the artery reconstructed by end-to-end anastomosis.

Conclusions

This report discusses the etiology, presentation, diagnosis and case management of inferior mesenteric artery aneurysms.

Sonographic diagnosis of inferior mesenteric artery aneurysm and marginal artery of Drummond

We report the case of a patient in whom sonographic examination revealed an aneurysm of the inferior mesenteric artery with severe proximal stenosis and poststenotic dilatation--the enlargement of the proximal portion of the artery of Drummond. This collateral pathway should be kept in mind when studying bowel ischemia, especially when stenosis is present or when there is occlusion of the superior mesenteric artery.