The pathophysiology and clinical aspects of hypercalcemic disorders.

Abstract For the purposes of this review, the vast and increasingly complex subject of hypercalcemic disorders can be broken down into the following categories: (1) Physiochemical state of calcium in circulation. (2) Pathophysiological basis of hypercalcemia. (3) Causes of hypercalcemia encountered in clinical practice: causes indicated by experience at the University of California, Los Angeles; neoplasia; hyperparathyroidism; nonparathyroid endocrinopathies; pharmacological agents; possible increased sensitivity to vitamin D; miscellaneous causes. (4) Clinical manifestations and diagnostic considerations of hypercalcemic disorders. (5) The management of hypercalcemic disorders: general measures; measures for lowering serum calcium concentration; measures for correcting primary causes—the management of asymptomatic hyperparathyroidism.