Question

A 58-year-old woman with new-onset hypercalcaemia (corrected calcium 2.85 mmol/L) and low PTH presents for evaluation. She has weight loss and a chronic cough. Which is the most likely cause of her hypercalcaemia?

Accepted Answer

Malignancy-associated hypercalcaemia (likely due to lung cancer).

Answer

Primary hyperparathyroidism.

Answer

Vitamin D intoxication.

Answer

Thiazide diuretic use.

Answer

Familial hypocalciuric hypercalcaemia.

Practice question

A 58-year-old woman with new-onset hypercalcaemia (corrected calcium 2.85 mmol/L) and low PTH presents for evaluation. She has weight loss and a chronic cough. Which is the most likely cause of her hypercalcaemia?