<prompt> Hypercalcemia caused by which one of the following is most likely to respond to treatment with coicosteroids?Primary hyperparathyroidismMilk alkali syndromeSarcoidosisPagets disease  <response>: Hypercalcemia is a highly prevalent complication of sarcoidosis. Hypercalcemia in sarcoidosis is due to the uncontrolled synthesis of 1,25-dihydroxyvitamin D3 by macrophages. 1,25-dihydroxyvitamin D3 leads to an increased absorption of calcium in the intestine and to an increased resorption of calcium in the bone Ref Davidson 23rd edition pg 364 