title: Predominance of rectosigmoid neoplasia in ulcerative colitis and its implication on cancer surveillance.
authors.forename: P M
authors.initials: PM
authors.lastname: Choi
mesh_terms: D003093:Colitis, Ulcerative / Q000150:complications*; D015179:Colorectal Neoplasms / Q000209:etiology*; D006801:Humans; D012811:Sigmoid Neoplasms / Q000175:diagnosis / Q000209:etiology*