title: Perforation of simple ulcer of the colon.
mesh_terms: D001466:Barium Sulfate / Q000009:adverse effects*; D003108:Colonic Diseases / Q000150:complications*; D006801:Humans; D007416:Intestinal Perforation / Q000209:etiology*; D008297:Male; D008875:Middle Aged; D014456:Ulcer / Q000150:complications*
chemical_list: D001466:Barium Sulfate