Middle mesenteric artery arising from an inflammatory infrarenal aortic aneurysm

Abstract

We report of a patient with an inflammatory infrarenal aortic aneurysm with a diameter of 6.5 cm, a middle mesenteric artery (MMA) arising from the aneurysm, and a review of the literature. The patient underwent successful surgical treatment by using an interposition tube graft (Dacron graft, 18 mm) with replantation of the MMA. Reports about a MMA arising separately from the aorta are extremely rare, especially in combination with an infrarenal aortic aneurysm. In our case, it arose from the anterior aspect of the abdominal aorta, 6 cm below the superior mesenteric artery (SMA) and 1.2 cm above the inferior mesenteric artery (IMA). The MMA gave branches to the ileum and distal jejunum and supplied the iliocolic and middle colic artery branch as well as the left colic artery branch. It is of extreme clinical importance for the surgical procedure to have a detailed knowledge of the different anatomical variations and anomalies.

Laparoscopic Resection of Transverse Colon Cancer with an Anomaly of the Middle Colic Artery Originating from the Splenic Artery: A Case Report

“…The MCA supplies blood to the transverse colon and typically (>97% of cases) arises from the SMA [ 3 , 4 ]. MCA origin anomaly is extremely rare, and only three surgical cases have been reported in the English literature, including 1 case where the MCA originated from the gastroduodenal artery in pancreas tumor surgery [ 5 ] and 2 cases where the MCA originated directly from the aorta in open surgery for colon cancer [ 3 , 6 ].…”