secondary hyperparathyroidism(redirected from Hyperparathyroidism, secondary)
hyperparathyroidism that arises as a result of disordered metabolism producing hypocalcemia, as in chronic uremia due to renal disease, malabsorption, rickets, or osteomalacia; associated with hyperplasia of the parathyroid glands.
secondary hyperparathyroidismEndocrinology ↑ Parathyroid activity with overproduction of PTH due to parathyroid hyperplasia in response to an extraparathyroid defect that results in ↓ Ca2+ Etiology Rickets, vitamin D deficiency, chronic renal failure Organs affected Bone, GI tract, kidneys, CNS, muscle
Excessive levels of parathyroid hormone (PTH) released in response to a low serum calcium, or a high serum phosphate level. It may be due to vitamin D deficiency or chronic kidney disease.
See also: hyperparathyroidism
sec·on·dar·y hy·per·par·a·thy·roid·ism(sekŏn-dar-ē hīpĕr-pară-thīroyd-izm)
Disorder that occurs as a complication of renal disease that affects all four parathyroid glands.