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Fig. 2B —87-year-old woman who presented with hypercalcemia and
inappropriate parathyroid hormone (PTH) levels. Parathyroid scintigraphy with
SPECT/CT was requested. Planar scintigraphy after IV injection of 740 MBq (20
mCi) 99mTc sestamibi revealed midline focus of radiopharmaceutical
uptake in lower neck. Unfused low-dose localizer–attenuation correction
CT image shows soft-tissue nodule (arrow), confirmed as ectopic
parathyroid adenoma at surgery.
