Fetal adenoma of the thyroid. A common source for false-positive thallium-201/technetium-99m pertechnetate subtraction parathyroid scintigraphy.


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… (More)


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