Figure 3: MRI with gadolinium enhancement of a56-year-old woman. (a) Preoperative MRI show a cystic lesion with a gadolinium-enhanced component (left and center: axial, right: sagittal section).According to the proposed new system, the tumor was grade III (score: 2+2+0+0+1+2=7). (b) Postoperative MRI with gadolinium enhancement performed 12 years after the operation demonstrate no recurrence (left: coronal, center: axial, right: sagittal section).