Diagnosis should be based on a detailed revision of the patient's medical history, a laboratory tests and physical examination are also important for diagnosis. X rays of the adrenal or pituitary glands can be useful to determine the location of the tumor. (1)
6- Investigations
The variety of tests available for Cushing’s syndrome reflects the limited sensitivity and specificity of each test separately. Several tests are combined to make a precise diagnosis. Investigations are divided into those which establish whether the patient has Cushing’s syndrome, and those which are used determine the cause. (3)
6-1 Tests to Diagnose Cushing's syndrome
Usually, several tests are needed to establish diagnosis rather than only one. There