title: Symmetrical hypofunctioning thyroid nodules and medullary thyroid carcinoma.
mesh_terms: D002277:Carcinoma / Q000000981:diagnostic imaging* / Q000235:genetics; D006801:Humans; D011877:Radionuclide Imaging; D013667:Technetium; D013964:Thyroid Neoplasms / Q000000981:diagnostic imaging* / Q000235:genetics
chemical_list: D013667:Technetium