The term “hypercalcemia of malignancy” is routinely used when calcium is elevated and PTH is below normal, and for good reason— this situation is often a result of malignant neoplasia, particularly lymphoma, anal sac adenocarcinoma, or multiple myeloma. However, many other diseases can fall into this category such as granulomatous disease, hyperthyroidism, vitamin D intoxication, and Addison’s […] Read more »