Francesco Porpiglia1, Stefano DE Luca1, Roberto Passera2, Matteo Manfredi1, Fabrizio Mele1, Enrico Bollito3, Agostino DE Pascale4, Marco Cossu1, Roberta Aimar1, Andrea Veltri4. 1. Division of Urology, San Luigi Gonzaga Hospital Orbassano and University of Torino-I, Turin, Italy. 2. Division of Nuclear Medicine, San Giovanni Battista Hospital Torino and University of Torino-I, Turin, Italy rpassera@cittadellasalute.to.it. 3. Division of Pathology, San Luigi Gonzaga Hospital Orbassano and University of Torino-I, Turin, Italy. 4. Division of Radiology, San Luigi Gonzaga Hospital Orbassano and University of Torino-I, Turin, Italy.
Abstract
AIM: To investigate if targeted prostate biopsy (TBx) has superior performance to standard untargeted biopsy (SBx) in determining the optimal agreement between biopsy and surgical Gleason Score (GS). PATIENTS AND METHODS: An analysis of our institutional longitudinal database identified 683 consecutive patients who underwent either SBx (18-20 standardized transrectal ultrasound peripheral/transitional zone cores) or TBx alone (4-6 cores for each multiparametric magnetic resonance suspicious lesion, Prostate Imaging Reporting and Data System [(PI-RADS)≥3] after a previous negative first SBx. A total of 246 consecutive patients with diagnosis of prostate cancer (117 SBx and 129 TBx diagnoses) who underwent robot-assisted radical prostatectomy between January 2014 and December 2015, were enrolled. The concordance of biopsy GS to pathological GS, as well as the association between categorical variables [age, digital rectal exam (DRE), TNM, PI-RADS], were analyzed by Fisher's exact test. RESULTS: Prostate cancer was diagnosed in 32.0% of the SBx group and in 49.3% of TBx. The rate of correctly classified, up-graded and down-graded GS was 53.8% vs. 91.5%, 39.3% vs. 7.8% and 6.8% vs. 0.8% for SBx and TBx, respectively (p<0.001). The GS concordance rates for SBx and TBx cohorts were: 14.3% vs. 41.7% for GS 6, 61.0% vs. 83.8% for GS 3+4, 56.3% vs. 75.0% for GS 4+3, 27.3% vs. 100% for GS 8 and 80% vs. 100% for GS 9, respectively. CONCLUSION: TBx ensured a higher of accuracy of prostate cancer detection and a better performance in discriminating significant from insignificant prostate cancer, when compared to SBx. TBx significantly reduced the risk of GS up-/down-grading at radical prostatectomy for all histopathological categories. This is a notable advance in the selection of candidates for active surveillance. Copyright
AIM: To investigate if targeted prostate biopsy (TBx) has superior performance to standard untargeted biopsy (SBx) in determining the optimal agreement between biopsy and surgical Gleason Score (GS). PATIENTS AND METHODS: An analysis of our institutional longitudinal database identified 683 consecutive patients who underwent either SBx (18-20 standardized transrectal ultrasound peripheral/transitional zone cores) or TBx alone (4-6 cores for each multiparametric magnetic resonance suspicious lesion, Prostate Imaging Reporting and Data System [(PI-RADS)≥3] after a previous negative first SBx. A total of 246 consecutive patients with diagnosis of prostate cancer (117 SBx and 129 TBx diagnoses) who underwent robot-assisted radical prostatectomy between January 2014 and December 2015, were enrolled. The concordance of biopsy GS to pathological GS, as well as the association between categorical variables [age, digital rectal exam (DRE), TNM, PI-RADS], were analyzed by Fisher's exact test. RESULTS: Prostate cancer was diagnosed in 32.0% of the SBx group and in 49.3% of TBx. The rate of correctly classified, up-graded and down-graded GS was 53.8% vs. 91.5%, 39.3% vs. 7.8% and 6.8% vs. 0.8% for SBx and TBx, respectively (p<0.001). The GS concordance rates for SBx and TBx cohorts were: 14.3% vs. 41.7% for GS 6, 61.0% vs. 83.8% for GS 3+4, 56.3% vs. 75.0% for GS 4+3, 27.3% vs. 100% for GS 8 and 80% vs. 100% for GS 9, respectively. CONCLUSION:TBx ensured a higher of accuracy of prostate cancer detection and a better performance in discriminating significant from insignificant prostate cancer, when compared to SBx. TBx significantly reduced the risk of GS up-/down-grading at radical prostatectomy for all histopathological categories. This is a notable advance in the selection of candidates for active surveillance. Copyright
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