Hyperparathyroidism classification
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
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Classification
Primary hyperparathyroidism
Primary hyperparathyroidism results from a hyperfunction of the parathyroid glands themselves. There is oversecretion of PTH due to adenoma, hyperplasia or, rarely, carcinoma of the parathyroid glands.
Secondary hyperparathyroidism
Secondary hyperparathyroidism is the reaction of the parathyroid glands to a hypocalcemia caused by other than a parathyroid pathology, e.g. chronic renal failure.
Tertiary hyperparathyroidism
Tertiary hyperparathyroidism is a state of excessive secretion of parathyroid hormone (PTH) after a long period of secondary hyperparathyroidism and resulting in hypercalcemia.