several studies have demonstrated that the corticotropin-releasing factor test ( crf ) is useful for the aetiological diagnosis of cushing 's syndrome : in cushing 's disease , as opposed to ectopic acth secretion syndrome , the hypothalamus-pituitary-adrenal ( hpa ) axis can still be stimulated by crf .
C0010481
cushing 's syndrome
C0001622
cushing 's disease