title: Anal "epistaxis": exteriorization of rectal bleeding during colonoscopy.
authors.forename: G
authors.initials: G
authors.lastname: Delpre
authors.forename: Y
authors.initials: Y
authors.lastname: Niv
mesh_terms: D000368:Aged; D001004:Anus Diseases / Q000209:etiology*; D003113:Colonoscopy / Q000009:adverse effects*; D006471:Gastrointestinal Hemorrhage / Q000209:etiology*; D006484:Hemorrhoids / Q000150:complications; D006801:Humans; D008297:Male; D012005:Rectal Prolapse / Q000150:complications