Results of a comparative analysis of magnetic resonance imaging-targeted versus three-dimensional transrectal ultrasound prostate biopsies: Size does matter.

OBJECTIVE - The aim of this study was to compare the detection rate of clinically significant disease in magnetic resonance imaging (MRI)-targeted biopsies versus three-dimensional transrectal ultrasound (3D TRUS)-guided biopsies according to prostate size.

METHODS - The study compared 120 consecutive biopsy-naïve men who underwent 3D TRUS-guided systematic biopsy to 120 consecutive men who underwent MRI-targeted biopsy. Stratifications based on tertiles were used for assessing interactions between prostate volume and rates of detection of significant cancer.

RESULTS - Older age, higher prostate-specific antigen level, lower prostate volume, increased number of cores and MRI-targeted biopsy were independent predictors of prostate cancer detection in the entire cohort on logistic regression. Clinically significant cancer detection rates were significantly higher in the MRI-targeted group than in the 3D TRUS-guided biopsy group (48. 7% vs 29. 4%, p = 0. 002). When stratified according to prostate volume, these rates were significantly higher only in the third tertile group (volume > 50 cm(3)) for MRI-targeted biopsy compared to 3D TRUS-guided biopsy (56% vs 22%, p = 0. 003).

CONCLUSIONS - MRI-targeted biopsies increased the detection rate of clinically significant prostate cancer only in patients with enlarged prostates compared to the 3D TRUS.

Go “Beyond the Abstract” - Read an article commentary written by the authors

Scandinavian journal of urology. 2016 Jan 12 [Epub ahead of print]

Alexandre Peltier, Fouad Aoun, Simone Albisinni, Quentin Marcelis, Dam Ledinh, Marianne Paesmans, Marc Lemort, Roland van Velthoven

a Department of Urology , Jules Bordet Institute, Université Libre de Bruxelles , Brussels , Belgium ;, a Department of Urology , Jules Bordet Institute, Université Libre de Bruxelles , Brussels , Belgium ;, a Department of Urology , Jules Bordet Institute, Université Libre de Bruxelles , Brussels , Belgium ;, a Department of Urology , Jules Bordet Institute, Université Libre de Bruxelles , Brussels , Belgium ;, a Department of Urology , Jules Bordet Institute, Université Libre de Bruxelles , Brussels , Belgium ;, b Department of Statistics , Jules Bordet Institute, Université Libre de Bruxelles , Brussels , Belgium ;, c Department of Radiology , Jules Bordet Institute, Université Libre de Bruxelles , Brussels , Belgium. , a Department of Urology , Jules Bordet Institute, Université Libre de Bruxelles , Brussels , Belgium ;

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