title: Toxic megacolon.
mesh_terms: D001285:Atropine / Q000009:adverse effects; D003093:Colitis, Ulcerative / Q000139:chemically induced*; D004157:Diphenoxylate / Q000009:adverse effects; D004338:Drug Combinations; D006801:Humans; D008532:Megacolon, Toxic / Q000139:chemically induced*
chemical_list: D004338:Drug Combinations; D004157:Diphenoxylate; D001285:Atropine