1. From the Departments of Surgery (S.A.L., H.G.M.), Radiology (Y.L., W.K.M., S.H.L.), and Pathology (H.S.R.), Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul 03080, Republic of Korea; and Medical Research Collaborating Center, Seoul National University Hospital, Seoul, Republic of Korea (M.J.J.).