title: Controversies, dilemmas, and dialogues. A hyperplastic polyp is discovered on flexible sigmoidoscopy. Is a full colonoscopy indicated?
authors.forename: E
authors.initials: E
authors.lastname: Achkar
authors.forename: S J
authors.initials: SJ
authors.lastname: Winawer
mesh_terms: D003113:Colonoscopy; D006801:Humans; D011127:Polyps / Q000175:diagnosis*; D012004:Rectal Neoplasms / Q000175:diagnosis*; D012812:Sigmoidoscopy