MRI-targeted biopsies versus systematic transrectal ultrasound guided biopsies for the diagnosis of localized prostate cancer in biopsy naïve men - Abstract

INTRODUCTION: To compare, in the same cohort of men, the detection of clinically significant disease in standard (STD) cores versus multiparametric magnetic resonance imaging (mpMRI) targeted (TAR) cores.

MATERIAL AND METHODS: A prospective study was conducted on 129 biopsy naïve men with clinical suspicion of prostate cancer. These patients underwent prebiopsy mpMRI with STD systematic biopsies and TAR biopsies when lesions were found. The agreement between the TAR and the STD protocols was measured using Cohen's kappa coefficient.

RESULTS: Cancer detection rate of MRI-targeted biopsy was 62.7%. TAR protocol demonstrated higher detection rate of clinically significant disease compared to STD protocol. The proportion of cores positive for clinically significant cancer in TAR cores was 28.9% versus 9.8% for STD cores (P < 0.001). The proportion of men with clinically significant cancer and the proportion of men with Gleason score 7 were higher with the TAR protocol than with the STD protocol (P = 0.003; P = 0.0008, resp.).

CONCLUSION: mpMRI improved clinically significant prostate cancer detection rate compared to STD protocol alone with less tissue sampling and higher Gleason score. Further development in imaging as well as multicentre studies using the START recommendation is needed to elucidate the role of mpMRI targeted biopsy in the management of prostate cancer.

Written by:
Peltier A, Aoun F, Lemort M, Kwizera F, Paesmans M, Van Velthoven R.   Are you the author?
Department of Urology, Jules Bordet Institute, 1 Héger-Bordet Street, 1000 Brussels, Belgium; Department of Radiology, Jules Bordet Institute, 1 Héger-Bordet Street, 1000 Brussels, Belgium; Department of Data Management, Jules Bordet Institute, 1 Héger-Bordet Street, 1000 Brussels, Belgium.

Reference: Biomed Res Int. 2015;2015:571708.
doi: 10.1155/2015/571708

PubMed Abstract
PMID: 25692142 Prostate Cancer Section