Surgical causes of hyper Ca2+:
Answer is D (All of the above): Hypercalcemia may be associated with MEN type I and type II, Hyperparathyroidism and Hypehyroidism. Pheochromocytoma is also described as a rare cause of hypercalcemia and usually causes hypercalcemia in association with MEN syndrome.
Hyperparathyroidism
MEN
Hyperparathyroidism
All of the above