1. From the Division of Abdominal Imaging and Intervention, Department of Radiology (J.L.C., R.O.A., S.B., C.P.B., S.G.S.), Department of Pathology (M.S.H., S.S.), Department of Radiology (C.P.B.), and Division of Urology, Department of Surgery (S.L.C.), Brigham and Women’s Hospital, 75 Francis St, Boston, MA 02115.