title: Preoperative technetium-99m imaging of a substernal parathyroid adenoma.
mesh_terms: D000236:Adenoma / Q000000981:diagnostic imaging*; D000368:Aged; D006801:Humans; D008297:Male; D008479:Mediastinal Neoplasms / Q000000981:diagnostic imaging*; D010280:Parathyroid Glands / Q000002:abnormalities*; D010282:Parathyroid Neoplasms / Q000000981:diagnostic imaging*; D011877:Radionuclide Imaging; D013670:Sodium Pertechnetate Tc 99m; D013667:Technetium
chemical_list: D013667:Technetium; D013670:Sodium Pertechnetate Tc 99m