Figure 4. Coronal T1W images demonstrating a pituitary tumor (macroprolactinoma) shrinkage in a patient treated with the dopamine agonist cabergoline for 10 years. The patient presented with hyperprolactinemia causing galactorrhea-amenorrhea, secondary adrenal insufficiency and central hypothyroidism. Hyperprolactinemia and adrenal insufficiency completely recovered during follow up.