Compared with this patients high serum calcium level, her intact parathyroid hormone level (PTH intact) is inappropriately high.1 Primary hyperparathyroidism presents with hypercalcemia and a high PTH intact level. Hyperthyroidism, lung cancer, medications, and sarcoidosis all are associated with low or suppressed PTH intact levels.
- Primary hyperparathyroidism.
1. Kearns AE, Thompson GB. Medical and surgical management of hyperparathyroidism [published erratum appears in Mayo Clin Proc 2002;77:298]. Mayo Clin Proc 2002;77:87-91.
2. Orwoll ES. Osteoporosis in men. Endocrinol Metab Clin North Am 1998;27:349-67.
3. Delmas PD, Meunier PJ. The management of Pagets disease of bone. N Engl J Med 1997;336:558-66.
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