Hyperparathyroidism classification
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Anmol Pitliya, M.B.B.S. M.D.[2]
Overview
Hyperparathyroidism can be classified into primary, secondary and tertiary.
Classification
Hyperparathyroidism can be classified into primary, secondary and tertiary.
Primary hyperparathyroidism
- Primary hyperparathyroidism is due to over activity of the parathyroid glands themselves. The most important causes of oversecretion of parathyroid hormone include:
- Adenoma
- Hyperplasia
- Carcinoma of the parathyroid glands
Secondary hyperparathyroidism
Secondary hyperparathyroidism is due to increase in secretion of parathyroid hormone from a secondary process.
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.
| Hyperparathyroidism | |||||||||||||||||||||||||||||||||||||
| Primary hyperparathyroidism | Secondary hyperparathyroidism | Tertiary hyperparathyroidosm | |||||||||||||||||||||||||||||||||||
| •Parathyroid adenoma •Parathyroid hyperplasia •Parathyroid carcinoma | •Chronic renal failure •Vitamin D deficiency | •Post-renal transplantation | |||||||||||||||||||||||||||||||||||