title: Precancerous lesions of the rectum and colon: diagnosis and treatment.
authors.forename: O C
authors.initials: OC
authors.lastname: GASS
mesh_terms: D003110:Colonic Neoplasms; D006801:Humans; D009369:Neoplasms; D011230:Precancerous Conditions; D012004:Rectal Neoplasms; D012007:Rectum