Quantification and significance of extraprostatic findings on prostate MRI: a retrospective analysis and three-tier classification.

Objectives: To quantify extraprostatic findings (EPFs) on prostate MRI, estimate the proportion of reported and unreported EPFs, assess their clinical importance, and propose standardized reporting of EPFs.

Materials And Methods: Prostate 3-T MRI studies, reports, and clinical data from 623 patients (age 67.9 ± 8.