Abstract:Background: Tumor-generated ectopic intact PTH is difficult to diagnose and should be suspected in patients with apparent primary hyperparathyroidism but with normal parathyroid glands.
Clinical Case: A 72-year-old man presented with symptoms of hypercalcemia including generalized weakness, polyuria, and polydipsia. Initial labs were consistent with primary hyperparathyroidism: calcium 12.1 mg/dL (n 8.6–10.3 mg/dL, albumin-corrected 12.5 mg/dL), intact PTH (iPTH) 115.6 pg/mL (n 10–65 pg/mL), low… Show more
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