Most common cause of Cushing's syndrome is
High-Yield Explanation
Causes of Cushing Syndrome: - Exogenous : External supplementation of glucocoicoids - Most common cause - Endogenous : Pituitary adenoma Ectopic ACTH secretion - Small cell lung cancer; Medullary thyroid cancer etc Adrenal causes - Adrenal hyperplasia / adenoma/ cancer