A 35-year-old woman has hypercalcaemia, raised PTH and a history of kidney stones. What is the most likely cause?

Answer and explanation

Correct answer: B. Primary hyperparathyroidism

  1. Step 1: High calcium with high PTH indicates primary hyperparathyroidism. Answer: Primary hyperparathyroidism. Why not the others: Vitamin D intoxication, Malignancy and Sarcoidosis don't fit.

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