Most common cause of Cushing's syndrome is?: (A) Pitutary adenoma, (B) Adrenal adenoma, (C) Adrenal carcinoma, (D) McCune Albright syndrome
Answer is A. Ans. is 'a' i.e., Pitutary adenoma ACTH-secreting pituitary adenomas account for approximately 70% of cases of endogenous hypercoisolism (Cushing's syndrome).