['To analyze whether diffusion-weighted imaging (DWI) predicts Gleason score (GS) upgrading in biopsy-proven low-grade prostate cancers.', 'A total of 132 patients who have biopsy-proven low-grade (GS< 7) prostate cancers, 3T DWI, and surgical confirmation were retrospectively included. Clinical [prostate-specific antigen, greatest percentage of biopsy core, and percentage of positive core number] and DWI parameters [minimum apparent diffusion coefficient (ADC', 'The rate of GS upgrading was 46.1% (61/132). In both univariate and multivariate analyses, ADC'] Does diffusion-weighted Imaging ( DWI ) predict Upgrading of Gleason Score in Biopsy-proven Low-grade Prostate Cancers?