Ischaemic colitis is one of the complications following aortic reconstruction for abdominal aortic aneurysm. The diagnosis and monitoring of this complication can be helped by a left colonoscopy. Through an endoscopic valuation of 18 patients, the Authors value the incidence of colonic mucosal or mucosal and muscularis ischaemia following aortic aneurysmectomy with inferior mesenteric arterial ligation.