title: Letter from the guest editor. Colorectal carcinoma.
authors.forename: M S
authors.initials: MS
authors.lastname: Levine
mesh_terms: D001466:Barium Sulfate; D002277:Carcinoma / Q000000981:diagnostic imaging*; D015179:Colorectal Neoplasms / Q000000981:diagnostic imaging*; D003287:Contrast Media; D004733:Enema; D006801:Humans; D011859:Radiography
chemical_list: D003287:Contrast Media; D001466:Barium Sulfate