摘要: Cushing’s syndrome (CS) results from prolonged exposure of tissues to excess glucocorticoids. After Harvey Cushing’ s initial report in the early 20th century (1), CS has been etiologically subdivided into adenocorticotropin hormone (ACTH)-independent (nonpituitary) or ACTH-dependent (2–4). Endogenous is rare, with an overall incidence approx two four new cases per million population year. accounts for 85% endogenous cases. In majority these (80%), cause autonomous pituitary ACTH secretion and referred as disease (CD). remaining 20%, source ectopic. CD a female male preponderance (8/1), whereas ectopic more common men (3/1). Ectopic corticotropin-releasing (CRH) production causing also described 11 (5–7). this chapter, we focus on diagnosis treatment which generally presents between second sixth decades life, peak at age 35 yr (2).