Titlebook: Atlas of Parathyroid Imaging and Pathology; Alexander L. Shifrin,L. Daniel Neistadt,Pritinder Book 2020 The Editor(s) (if applicable) and

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Ultrasonography, Sestamibi Scan, and SPECT/CT Sestamibi Scan of Intrathyroidal Parathyroid Adenoma aThis chapter presents eight cases of intrathyroidal parathyroid adenoma (Figs. 8.1, 8.2, 8.3, 8.4, 8.5, and 8.6) or cystic parathyroid adenoma (Figs. 8.7 and 8.8), which are all identified using ultrasound and SPECT/CT imaging.

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Right Inferior Parathyroid Adenomaocated posteriorly and inferiorly to the inferior pole of the right thyroid lobe. When Tc99m sestamibi SPECT/CT scans are used, the scintigraphic findings are compatible with a parathyroid adenoma at the level of the lower pole of the right lobe of the thyroid gland. On immediate images a focus of i

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Left Superior Parathyroid Adenomariorly to the superior pole of the left thyroid lobe. When sestamibi scans are used, in some cases persistent tracer activity within each lobe of the thyroid gland severely limits evaluation for a parathyroid adenoma, even on 3-hour delayed images. When viewed in light of the ultrasound findings, ho

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Imaging of the Parathyroid Carcinomaoidism. Because of the rarity of this cancer, the diagnosis is difficult to establish. The diagnosis could be suspected from findings of a very high serum calcium level usually higher than 14–16 mg/dL with corresponding elevation of serum parathyroid hormone level 10–15-fold higher than the normal r

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Individual CT Phaseslarly important for distinguishing subcapsular parathyroid glands, but it is also critical in identifying ectopic rests of thyroid tissue. Arterial phase is performed during contrast infusion that starts 20–45 seconds from the start of a rapid 3 or 4 cc/second infusion of contrast followed by a sali