Parathyroid adenoma
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
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A parathyroid adenoma is a benign tumor of the parathyroid gland. It generally causes hyperparathyroidism; there are very few reports of parathyroid adenomas that were not associated with hyperparathyroidism.[1]
A human being usually has four parathyroid glands located on the back surface of the thyroid in the neck. The parathyroids secrete parathyroid hormone (PTH), which increases the concentration of calcium in the blood by inducing the bones to release calcium into the blood and the kidneys to reabsorb it from the urine into the blood. When a parathyroid adenoma causes hyperparathyroidism, more parathyroid hormone is secreted, causing the calcium concentration of the blood to rise, resulting in hypercalcemia.[2]
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References
- ↑ Sekine O, Hozumi Y, Takemoto N, Kiyozaki H, Yamada S, Konishi F (March 2004). "Parathyroid adenoma without hyperparathyroidism". Japanese Journal of Clinical Oncology. 34 (3): 155–8. doi:10.1093/jjco/hyh028. PMID 15078912.
- ↑ Felsenfeld AJ, Rodríguez M, Aguilera-Tejero E (November 2007). "Dynamics of parathyroid hormone secretion in health and secondary hyperparathyroidism". Clinical Journal of the American Society of Nephrology. 2 (6): 1283–305. doi:10.2215/CJN.01520407. PMID 17942777.