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Vol. 62. Issue 6.
Pages 437-451 (November - December 2020)
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Vol. 62. Issue 6.
Pages 437-451 (November - December 2020)
Update in Radiology
Prostate MRI: Practical guidelines for interpreting and reporting according to PI-RADS version 2.1
Resonancia magnética de próstata: guía práctica de interpretación e informe según PI-RADS versión 2.1
R. Sánchez-Oro
Corresponding author

Corresponding author.
, J. Torres Nuez, G. Martínez-Sanz, Q. Grau Ortega, M. Bleila
Servicio de Radiodiagnóstico, Hospital General de Teruel Obispo Polanco, Teruel, Spain
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Figures (10)
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Tables (3)
Table 1. Patient preparation (no general consensus) and technical requirements for mpMRI of the prostate according to the PI-RADS v2.13 and a subsequent review by Engels et al.33.
Table 2. Findings that may lead to diagnostic error in MRI of the prostate and recommendations for its prevention.27,35–52.
Table 3. Structured report template, adapted from the PI-RADS 2.1.3.
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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.

Magnetic resonance
Prostate multiparametric magnetic resonance imaging
Prostate cancer
Prostate tumors
Diffusion MRI

La creciente precisión de la resonancia magnética multiparamétrica de próstata, en combinación con una mayor experiencia y estandarización en su interpretación, han conferido a esta técnica un papel actual sustancial en el manejo del cáncer de próstata, neoplasia no cutánea más prevalente en el varón. Revisamos los conceptos del sistema PI-RADS versión 2.1 para la estimación de la probabilidad y localización zonal de tumores significativos de próstata, con un enfoque práctico que incluye consideraciones actuales sobre los requisitos previos de la prueba y recomendaciones para su interpretación. Se hace hincapié en hallazgos benignos que pueden llevar a confusión y los criterios de valoración de la probabilidad de extensión local de la enfermedad, que deben también formar parte de un informe estructurado.

Palabras clave:
Resonancia magnética
Resonancia magnética multiparamétrica de próstata
Carcinoma de próstata
Neoplasia de próstata
Difusión con RM


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