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Technetium-99m-pertechnetate uptake by intrathyroidal parathyroid adenoma
W D Leslie1, K T Riese, R Guzman
1Department of Nuclear Medicine, University of Manitoba, Winnipeg, Canada.
Abstract:
A 57-yr-old woman was referred for preoperative scintigraphic localization of a parathyroid adenoma. Double-phase 99mTc-sestamibi imaging was performed followed by a separate-day [99mTc]pertechnetate thyroid scan. There was marked accumulation of both tracers by a right lower pole ¿thyroid' nodule which, at surgery, proved to be an intrathyroidal parathyroid adenoma. Hypervascularity is the presumed explanation for rare cases of pertechnetate-avid parathyroid adenomas.