Prostate MRI: practical guidelines for interpreting and reporting according to PI-RADS version 2.1

Abstract

The increasing precision of multiparametric magnetic resonance imaging of the prostate, together with greater experience and standardization in its interpretation, has given this technique an important role in the management of prostate cancer, the most prevalent non-cutaneous cancer in men. This article reviews the concepts in PI-RADS version 2.1 for estimating the probability and zonal location of significant tumors of the prostate, using a practical approach that includes current considerations about the prerequisites for carrying out the test and recommendations for interpreting the findings. It emphasizes benign findings that can lead to confusion and the criteria for evaluating the probability of local spread, which must be included in the structured report.

Keywords: Carcinoma de próstata; Diffusion MRI; Difusión con RM; Magnetic resonance; Neoplasia de próstata; PI-RADS; Prostate cancer; Prostate multiparametric magnetic resonance imaging; Prostate tumors; Resonancia magnética; Resonancia magnética multiparamétrica de próstata.