Clostridium difficile in toxic megacolon.
D003015:Clostridium Infections / Q000150:complications*; D003093:Colitis, Ulcerative / Q000209:etiology*; D004108:Dilatation, Pathologic / Q000150:complications; D006801:Humans; D008297:Male; D008532:Megacolon, Toxic / Q000209:etiology*; D008875:Middle Aged