1. From the Departments of Medicine (J.K., N.P., C.K., N.G.P., C.F., J.E.), Pathology (R.S., A.T., P.D.), Radiology (Y.A.), and Surgery (P.C., H.R.), Tufts-New England Medical Center, Tufts University School of Medicine, Boston, Mass; and the Department of Radiology (K.C.), Brigham and Women’s Hospital, Harvard Medical School, Boston, Mass.