1. From the Departments of Radiology (M.E.K., I.T., L.L.), Pathology (A.M.), and Nuclear Medicine (A.T.), Centre Hospitalier Universitaire de Montréal (CHUM), 1051 Rue Sanguinet, Montréal, QC, Canada H2X 3H4; and Department of Radiology, McGill University Health Centre, Montréal, Quebec, Canada (B.M.).