title: [Isolated ulcer of the small intestine. Abnormal structures in the intestinal wall].
abstract: Four years after abdominal trauma, an intestinal loop was resected in a 19-year-old male due to persistent abdominal pain, rectal bleeding, and the suspicion of tumor. A typical ischemic ulcer was found. The resected loop showed, moreover, two peculiar histological features which, to the best of our knowledge, have not been described in the literature: 1. smooth muscle sleeves surrounding intraparietal arteries; 2. entero-mesenteric smooth muscle bands. It is suggested that these muscular structures could, when contracted, provoke arterial stenoses and contribute to the formation of the ulcer.
mesh_terms: D000328:Adult; D006801:Humans; D007082:Ileum / Q000601:surgery*; D007421:Intestine, Small / Q000473:pathology; D008297:Male; D008643:Mesentery / Q000473:pathology; D009130:Muscle, Smooth / Q000473:pathology*; D014456:Ulcer / Q000601:surgery*
vernacular_title: Ulcère isolé de l'intestin grêle. Structures malformatives dans la paroi intestinale.