title: Tc-99m pertechnetate uptake in a thymoma: case report.
abstract: A case is reported to Tc-99m pertechnetate accumulation within an anterior mediastinal thymoma during a search for substernal goiter. This reemphasizes the non-specificity of Tc-99m pertechnetate uptake and the need for caution in using this agent to detect ectopic thyroid tissue.
mesh_terms: D003937:Diagnosis, Differential; D006045:Goiter, Substernal / Q000000981:diagnostic imaging; D006801:Humans; D008875:Middle Aged; D011877:Radionuclide Imaging; D013670:Sodium Pertechnetate Tc 99m; D013667:Technetium; D013945:Thymoma / Q000000981:diagnostic imaging*; D013953:Thymus Neoplasms / Q000000981:diagnostic imaging*
chemical_list: D013667:Technetium; D013670:Sodium Pertechnetate Tc 99m