Three cases of acute ulcers of the cecum causing massive bleeding with hemodynamic impact are reported. These three cases involve young subjects (28, 31 and 51 years old). Bleeding occurs after an aggression (post-traumatic context in 2 cases, postoperative in 1 case). For these three patients, the angiographic location of arterial bleeding allows elective colic exeresis without rebleeding. From a pathogenetic point of view, the most likely hypothesis seems to be that of ischemic lesions following an aggression.