title: Fetal adenoma of the thyroid. A common source for false-positive thallium-201/technetium-99m pertechnetate subtraction parathyroid scintigraphy.
abstract: The specificity of thallium/technetium imaging for the localization of parathyroid tumors has remained high. False-positive findings usually arise from an incorrectly perceived mismatch. In these case reports, false-positive findings resulted from the presence of intrathyroidal fetal adenomas. Benign thyroid adenomas appear to represent a common source of false-positive finding for parathyroid tumor in thallium/technetium imaging.
mesh_terms: D000236:Adenoma / Q000000981:diagnostic imaging*; D000368:Aged; D003951:Diagnostic Errors; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009377:Multiple Endocrine Neoplasia / Q000000981:diagnostic imaging*; D010282:Parathyroid Neoplasms / Q000000981:diagnostic imaging*; D011868:Radioisotopes; D011877:Radionuclide Imaging; D013670:Sodium Pertechnetate Tc 99m; D013382:Subtraction Technique; D013793:Thallium; D013964:Thyroid Neoplasms / Q000000981:diagnostic imaging*
chemical_list: D011868:Radioisotopes; D013670:Sodium Pertechnetate Tc 99m; D013793:Thallium