Figure 3 :(a) MRI T1 post-gadolinium image (sagittal view) showing both tumors, AN and pituitary adenoma simultaneously. (b) Six months after GK radiosurgery, MRI T1 post-gadolinium image (sagittal view) showing both tumors, AN which was reduced to 1.2×1.5×1.2 cm in size and pituitary adenoma simultaneously