[Hypercalcemia].

the surgical intensive care unit is not an unusual event.1 Prompt recognition and management of adrenal insufficiency are critical to patient recovery and survival. Although it is an infrequent presenting sign of adrenal insufficiency, hypercalcemia is a well recognized complication of the disorder.2,3 Hypercalcemia has been reported to occur not only with primary hypoadrenalism but also with secondary hypoadrenalism.3 This report describes a 45-year-old woman whose postoperative course was complicated by adrenal insufficiency that presented as hypercalcemia. The article also reviews the pathophysiology, differential diagnosis, and management of hypercalcemia secondary to adrenal insufficiency.