[An unusual case of atherosclerotic aneurysm of the trunk of the superior mesenteric artery, successfully treated with surgery].

A case of atherosclerotic aneurysm of the superior mesenteric artery is reported. This was located about 15 cm from its origin and immediately distal to the middle colic artery in a patient who had been operated on 4 years previously with aorto-iliac substitution for aneurysm of the same nature with ligature and section of the inferior mesenteric artery at the origin. Interruption of the latter created further technical problems solved with a serie of anastomoses that permitted the introduction of a good direct flow from the superior mesenteric respectively to the right colic and into an ileal branch which became a bridge or, rather, a "new mesenteric" assuring excellent pulsed flow into the underlying ileal branches, one of which anastomized at the ileocolic. This enabled direct, valid, pulsed flow to be resumed.