Figure 4. Empty sella: MRI of a 40 years old female patient with acromegalic features but a GH-level below 1 μg/l and an IGF-1-level below the normal age matched range. She had hypogonadotropic hypogonadism and her enlarged sellar cavity is filled with CSF with a rim of pituitary tissue, suggesting that she had an apoplexy of a somatotroph tumor.