title: False-positive gastrointestinal bleeding study due to a pelvic kidney.
mesh_terms: D000368:Aged; D005189:False Positive Reactions; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000000981:diagnostic imaging*; D006801:Humans; D007668:Kidney / Q000002:abnormalities* / Q000000981:diagnostic imaging; D004369:Pentetic Acid; D011877:Radionuclide Imaging; D013670:Sodium Pertechnetate Tc 99m; D013667:Technetium; D016284:Technetium Tc 99m Pentetate
chemical_list: D013667:Technetium; D004369:Pentetic Acid; D013670:Sodium Pertechnetate Tc 99m; D016284:Technetium Tc 99m Pentetate