title: Discordant findings in technetium-99m pertechnetate and iodine-123 thyroid imaging caused by vascular retention in the superior vena cava.
abstract: This report demonstrates superior vena cava (SVC) retention of Tc-99m pertechnetate as a cause of discordant findings in thyroid imaging performed with Tc-99m pertechnetate and I-123.
mesh_terms: D003951:Diagnostic Errors; D006801:Humans; D007457:Iodine Radioisotopes; D008297:Male; D008875:Middle Aged; D011877:Radionuclide Imaging; D013670:Sodium Pertechnetate Tc 99m; D013961:Thyroid Gland / Q000000981:diagnostic imaging*; D014683:Vena Cava, Superior / Q000000981:diagnostic imaging*
chemical_list: D007457:Iodine Radioisotopes; D013670:Sodium Pertechnetate Tc 99m