Figure 4. Coronal CT head scans before and during treatment with bromocriptine. Magnetic resonance imaging (T1 weighted with gadolinium enhancement) of a man harboring a large macroprolactinoma. A1(coronal view) A2 (sagittal view) before treatment and B1 (coronal view) and B2 (sagittal view), after one month of cabergoline (0,5mg thrice a week) treatment. The significant tumor shrinkage was paralleled by serum prolactin decrease from 6,600 ng/mL to 540 ng/mL and by visual improvement