<prompt> Surgical causes of hyper Ca2:HyperparathyroidismMENHyperparathyroidismAll of the above  <response>: 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. 