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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.
For more information go the endocrinediseases.org:
Parathyroid Gland

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