Apr 04, 2022 · Parathyroid.com is the world's top source for parathyroid glands and their most common disease: hyperparathyroidism. The site is maintained by the Norman Parathyroid Center, the world's leading parathyroid surgery center performing about 10% of the parathyroid operations in the United States--nearly 4000 per year. Hyperparathyroidism ....