RT Book, Section A1 Porterfield, John R. A1 Thompson, Geoffrey B. A2 Morita, Shane Y. A2 Dackiw, Alan P. B. A2 Zeiger, Martha A. SR Print(0) ID 6163237 T1 Chapter 14. Hypercortisolism T2 McGraw-Hill Manual: Endocrine Surgery YR 2010 FD 2010 PB The McGraw-Hill Companies PP New York, NY SN 978-0-07-160645-5 LK accesssurgery.mhmedical.com/content.aspx?aid=6163237 RD 2024/04/18 AB Hypercortisolism is a disorder characterized by excessive circulating cortisol from either endogenous or exogenous sources, which can cause detrimental changes to nearly every organ system. Collectively, the ravages of hypercortisolism are best classified as Cushing's syndrome (CS). The term Cushing's syndrome is used for all causes of hypercortisolism, and the term Cushing's disease is reserved specifically for cases of pituitary-dependent CS. The most common cause of CS is exogenous administration of glucocorticoids, which are used for their beneficial antiinflammatory, antineoplastic, and immunosuppressive effects. This chapter focuses solely on endogenous CS and is a summary of our recent review at the Mayo Clinic in Rochester, Minnesota.1