title: Sequestered substernal goiter.
mesh_terms: D006045:Goiter, Substernal / Q000000981:diagnostic imaging*; D006801:Humans; D007457:Iodine Radioisotopes; D011877:Radionuclide Imaging; D013667:Technetium
chemical_list: D007457:Iodine Radioisotopes; D013667:Technetium