The authors report 3 cases of intestinal bleeding either micro- or macroscopic induced by ulcers in blind loops. The blind loops developed in all 3 cases on side-to-side ileocolic anastomoses. In one of the patients, the ulcers were demonstrated by colonoscopy. The 3 cases reported are quite comparable to the 18 cases found in the world literature. These hemorrhages may become severe by their abundance or repetition, but a cure is easily obtained by resection of the intestinal blind loops and restoration of the continuity by end-to-end anastomosis.