[Toxic megacolon associated with ulcerative colitis--report of two cases].
D000328:Adult; D003093:Colitis, Ulcerative / Q000150:complications* / Q000473:pathology; D003106:Colon / Q000473:pathology*; D005260:Female; D006801:Humans; D008297:Male; D008532:Megacolon, Toxic / Q000150:complications; D011247:Pregnancy; D011251:Pregnancy Complications, Infectious / Q000473:pathology*