Lower gastrointestinal bleeding after aspirin intake was reported in a 64-year-old woman. Gastroscopy, colonoscopy and selective mesenteric angiography failed to reveal the source of hemorrhage; only a midgut malrotation was suggested by angiography. Small bowel enema finally demonstrated a blind sac on the antimesenteric border of the ileum, corresponding to a Meckel's diverticulum. This embryological remnant of the vitelline duct was associated with a mesenterium commune. Laparoscopy confirmed the small bowel study, and resection of the diverticulum was easily carried out. It is, to our knowledge, the first time that these developmental abnormalities have been preoperatively diagnosed together.
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