Question

A 52-year-old man presents with elevated calcium discovered on routine labs. Serum calcium is 11.6 mg/dL (normal 8.5 to 10.5), phosphorus is low, and PTH is elevated. 24-hour urinary calcium is also elevated. He has no symptoms. What is the most likely diagnosis?

Accepted Answer

Primary hyperparathyroidism

Answer

Familial hypocalciuric hypercalcemia

Answer

Malignancy-associated hypercalcemia

Answer

Vitamin D intoxication

Answer

Granulomatous disease causing hypercalcemia

Practice question

A 52-year-old man presents with elevated calcium discovered on routine labs. Serum calcium is 11.6 mg/dL (normal 8.5 to 10.5), phosphorus is low, and PTH is elevated. 24-hour urinary calcium is also elevated. He has no symptoms. What is the most likely diagnosis?