A common cause of Cushing syndrome is -
75% cases of Cushing's syndrome is caused by ACTH-producing pituitary adenomas (Cushing's disease); Ectopic ACTH syndrome - 15%; adrenocoical adenomas-5 to 10% and adrenocoical carcinoma-1% and other rare causes-<1%. Reference : page 2314 Harrison's Principles of Internal Medicine 19th edition
Cancer producing ectopic ACTH
Pituitary adenoma
Adrenal tuberculosis
None of the above
Endocrinology