What are the classifications of causes of Cushing's?

ACTH-dependent (pituitary dependent, ectopic ACTH, Ectopic CRH, macronodular adrenal hyperplasia, iatrogenic (tx with 1-24 ACTH) ACTH independent (Adrenal adenoma and carcinoma, primary pigmented nodular adrenal hyperplasia and Carney's syndrome, MacCune-Albright, aberrant receptor expression, iatrogenic cortisol) Pseudo Cushing's (alcoholism, depression and obesity)