1. From the Department of Diagnostic Imaging, Division of Abdominal Radiology, Hospital Santa Catarina, Rua Artur Prado 394, São Paulo, SP 01322-000, Brazil (A.C.V.R.U., L.M.P., J.d.Á.F.); and Department of Diagnostic Imaging, Division of Abdominal Radiology, Hospital Beneficência Portuguesa, São Paulo, Brazil (A.C.V.R.U., C.P.A., M.H.N.I.P., K.S.A., N.B.N.G.).