What is a parathyroid localization study?

In most patients with primary hyperparathyroidism (80%), only one of the four parathyroid glands is diseased. Localizing tests are radiology tests designed to help identify which parathyroid gland(s) are hyperactive. The most commonly performed localizing tests are a sestamibi scan and ultrasound of the neck. Increasingly, high resolution CT (computed tomography or CAT scans) and MRI (magnetic resonance imaging) scans are also showing significant promise.
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Parathyroid Gland

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