[Radioisotope diagnosis of cancer of the gastrointestinal tract].
D004938:Esophageal Neoplasms / Q000175:diagnosis*; D006801:Humans; D010190:Pancreatic Neoplasms / Q000175:diagnosis*; D010610:Pharyngeal Neoplasms / Q000175:diagnosis*; D011868:Radioisotopes; D011877:Radionuclide Imaging; D013274:Stomach Neoplasms / Q000175:diagnosis*
D011868:Radioisotopes