title: Barium-water double contrast enema.
mesh_terms: D001466:Barium Sulfate; D003092:Colitis / Q000175:diagnosis; D003106:Colon / Q000000981:diagnostic imaging*; D003110:Colonic Neoplasms / Q000175:diagnosis; D003424:Crohn Disease / Q000175:diagnosis; D004733:Enema; D006801:Humans; D008722:Methods; D011127:Polyps / Q000175:diagnosis; D011859:Radiography; D014867:Water
chemical_list: D014867:Water; D001466:Barium Sulfate