Further reduction of disqualification rates by additional MRI-targeted biopsy with transperineal saturation biopsy compared with standard 12-core systematic biopsies for the selection of prostate cancer patients for active surveillance

Background:Active surveillance (AS) is commonly based on standard 10-12-core prostate biopsies, which misclassify ~50% of cases compared with radical prostatectomy. We assessed the value of multiparametric magnetic resonance imaging (mpMRI)-targeted transperineal fusion-biopsies in men under AS.Meth...

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Hauptverfasser: Radtke, Jan Philipp (VerfasserIn) , Kuru, Timur Hasan (VerfasserIn) , Bonekamp, David (VerfasserIn) , Alt, Céline D. (VerfasserIn) , Hatiboglu, Gencay (VerfasserIn) , Boxler, Silvan (VerfasserIn) , Pahernik, Sascha (VerfasserIn) , Roth, Wilfried (VerfasserIn) , Schlemmer, Heinz-Peter (VerfasserIn) , Hohenfellner, Markus (VerfasserIn) , Hadaschik, Boris (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 17 May 2016
In: Prostate cancer and prostatic diseases
Year: 2016, Jahrgang: 19, Heft: 3, Pages: 283-291
ISSN:1476-5608
DOI:10.1038/pcan.2016.16
Online-Zugang:Verlag, Volltext: http://dx.doi.org/10.1038/pcan.2016.16
Verlag, Volltext: https://www.nature.com/articles/pcan201616
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Verfasserangaben:J.P. Radtke, T.H. Kuru, D. Bonekamp, M.T. Freitag, M.B. Wolf, C.D. Alt, G. Hatiboglu, S. Boxler, S. Pahernik, W. Roth, M.C. Roethke, H.P. Schlemmer, M. Hohenfellner, B.A. Hadaschik

MARC

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520 |a Background:Active surveillance (AS) is commonly based on standard 10-12-core prostate biopsies, which misclassify ~50% of cases compared with radical prostatectomy. We assessed the value of multiparametric magnetic resonance imaging (mpMRI)-targeted transperineal fusion-biopsies in men under AS.Methods:In all, 149 low-risk prostate cancer (PC) patients were included in AS between 2010 and 2015. Forty-five patients were initially diagnosed by combined 24-core systematic transperineal saturation biopsy (SB) and MRI/transurethral ultrasound (TRUS)-fusion targeted lesion biopsy (TB). A total of 104 patients first underwent 12-core TRUS-biopsy. All patients were followed-up by combined SB and TB for restratification after 1 and 2 years. All mpMRI examinations were analyzed using PIRADS. AS was performed according to PRIAS-criteria and a NIH-nomogram for AS-disqualification was investigated. AS-disqualification rates for men initially diagnosed by standard or fusion biopsy were compared using Kaplan-Meier estimates and log-rank tests. Differences in detection rates of the SB and TB components were evaluated with a paired-sample analysis. Regression analyses were performed to predict AS-disqualification.Results:A total of, 48.1% of patients diagnosed by 12-core TRUS-biopsy were disqualified from AS based on the MRI/TRUS-fusion biopsy results. In the initial fusion-biopsy cohort, upgrading occurred significantly less frequently during 2-year follow-up (20%, P<0.001). TBs alone were significantly superior compared with SBs alone to detect Gleason-score-upgrading. NPV for Gleason-upgrading was 93.5% for PIRADS⩽2. PSA level, PSA density, NIH-nomogram, initial PIRADS score (P<0.001 each) and PIRADS-progression on consecutive MRI (P=0.007) were significant predictors of AS-disqualification.Conclusions:Standard TRUS-biopsies lead to significant underestimation of PC under AS. MRI/TRUS-fusion biopsies, and especially the TB component allow more reliable risk classification, leading to a significantly decreased chance of subsequent AS-disqualification. Cancer detection with mpMRI alone is not yet sensitive enough to omit SB on follow-up after initial 12-core TRUS-biopsy. After MRI/TRUS-fusion biopsy confirmed AS, it may be appropriate to biopsy only those men with suspected progression on MRI. 
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