title: Toxic megacolon in ulcerative colitis.
mesh_terms: D000328:Adult; D000368:Aged; D003082:Colectomy; D003093:Colitis, Ulcerative / Q000150:complications / Q000175:diagnosis / Q000401:mortality / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007081:Ileostomy; D007416:Intestinal Perforation / Q000209:etiology; D008297:Male; D008722:Methods; D008875:Middle Aged; D012075:Remission, Spontaneous; D012812:Sigmoidoscopy