1. From the Departments of Medicine (A.K., P.J.S.), Radiology (M.S.), Radiation Oncology (S.C.K.), and Pathology (B.B.), Massachusetts General Hospital, and the Departments of Medicine (A.K., P.J.S.), Radiology (M.S.), Radiation Oncology (S.C.K.), and Pathology (B.B.), Harvard Medical School — both in Boston.