Hyperparathyroidism
摘要
Hyperparathyroidism is produced by the excess production of parathyroid hormone (PTH) which is normally produced by the parathyroid glands in response to a decrease in serum calcium levels. Rarely, it may be associated with a Noonan-type syndrome, a complex, autosomal dominant inherited trait comprising short stature, unusual facies, mental retardation, and cardiac defects. It may be one of the three types—primary, secondary, or hereditary.