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NCI Dictionary of Cancer Terms


hyperparathyroidism  listen  (HY-per-PAYR-uh-THY-roy-dih-zum)

  A condition in which the parathyroid gland (one of four pea-sized organs found on the thyroid) makes too much parathyroid hormone. This causes a loss of calcium from the bones and an increased level of calcium in the blood. Symptoms include bone pain and kidney problems.