1. From the Department of Radiology, Hospital Naval Almirante Nef, Subida Alessandri S/N, Viña del Mar 2520000, Chile (M.G.S., G.V.L.H.); Departments of Radiology (M.G.S.) and Pathology (H.O.S.), Hospital Dr Eduardo Pereira, Valparaíso, Chile; Department of Radiology, Pontificia Universidad Católica de Chile, Santiago, Chile (I.B.); Department of Pathology, Universidad Andrés Bello, Viña del Mar, Chile (H.O.S.);...