1. From the Department of Radiology (L.L.d.F., A.L.B., I.S.d.O., C.D.O., M.d.S.R.) and Liver Surgery Unit, Discipline of Digestive Surgery, Department of Gastroenterology (G.F.D., P.H., V.B.J.), University of São Paulo School of Medicine, Ovídio Pires de Campos 75, São Paulo 05403-010, Brazil.