title: Retrograde small-bowel examination.
mesh_terms: D001466:Barium Sulfate; D003937:Diagnosis, Differential; D005471:Fluoroscopy; D006801:Humans; D007414:Intestinal Neoplasms / Q000000981:diagnostic imaging*; D007421:Intestine, Small / Q000000981:diagnostic imaging*; D008722:Methods; D013679:Technology, Radiologic
chemical_list: D001466:Barium Sulfate