Figure 4d. Transverse MR images of the right breast of a woman who underwent MR imaging for screening because of an increased lifetime risk. (a) Unenhanced, (b) early contrast-enhanced, (c) wash-in (subtraction), and (d) washout (subtraction) images show incidental enhancing lesion of 12 mm, rated indeterminate by the radiologist. Images at US performed for correlation showed no abnormalities. At follow-up MR imaging, the lesion was no longer visible. The combined model calculated a 9.7% probability of malignancy.