---For patients with presumed localized disease (any T, N0, M0), a multiparametric MRI (standard of care at the NIH Clinical Center) must be performed within 4 months of the 18F-DCFBC injection with findings suggestive for prostate cancer and a prostate lesion at least 6mm or greater. Must have histopathologic confirmation of prostate cancer prior to 18F-DCFBC imaging.