title: Choledochoduodenal fistula due to a chronic duodenal ulcer.
mesh_terms: D000328:Adult; D001658:Biliary Fistula / Q000209:etiology*; D004381:Duodenal Ulcer / Q000150:complications* / Q000601:surgery; D005743:Gastrectomy; D006801:Humans; D007412:Intestinal Fistula / Q000209:etiology*; D008297:Male