[Massive proctorrhagia in chronic ulcerative colitis. Apropos of 12 cases].
D003092:Colitis; D003093:Colitis, Ulcerative; D006471:Gastrointestinal Hemorrhage; D006470:Hemorrhage; D006801:Humans; D012007:Rectum
COLITIS, ULCERATIVE; HEMORRHAGE, GASTROINTESTINAL