title: The colon.
authors.affiliation: Department of Radiology, Bowman Gray School of Medicine, Wake Forest University, Winston-Salem, North Carolina.
authors.forename: D W
authors.initials: DW
authors.lastname: Gelfand
mesh_terms: D001466:Barium Sulfate; D003110:Colonic Neoplasms / Q000000981:diagnostic imaging*; D015179:Colorectal Neoplasms / Q000000981:diagnostic imaging*; D004733:Enema; D006801:Humans; D011859:Radiography
chemical_list: D001466:Barium Sulfate