MP77-05 UROLOGIST LEARNING CURVE HAS AN IMPACT ON INCREASING PROBABILITY OF CLINICALLY SIGNIFICANT CANCER DETECTION RATE AT MPMRI-TRUS FUSION TARGET BIOPSY: A PROSPECTIVE STUDY IN A SINGLE HIGH VOLUME INSTITUTION

Abstract

You have accessJournal of UrologyProstate Cancer: Detection & Screening VI1 Apr 2018MP77-05 UROLOGIST LEARNING CURVE HAS AN IMPACT ON INCREASING PROBABILITY OF CLINICALLY SIGNIFICANT CANCER DETECTION RATE AT MPMRI-TRUS FUSION TARGET BIOPSY: A PROSPECTIVE STUDY IN A SINGLE HIGH VOLUME INSTITUTION Giuliana Lista, Giovanni Lughezzani, Massimo Lazzeri, Davide Maffei, Pasquale Cardone, Piergiuseppe Colombo, Nicolò Buffi, Rodolfo Hurle, Alberto Saita, Paolo Casale, and Giorgio Guazzoni Giuliana ListaGiuliana Lista More articles by this author , Giovanni LughezzaniGiovanni Lughezzani More articles by this author , Massimo LazzeriMassimo Lazzeri More articles by this author , Davide MaffeiDavide Maffei More articles by this author , Pasquale CardonePasquale Cardone More articles by this author , Piergiuseppe ColomboPiergiuseppe Colombo More articles by this author , Nicolò BuffiNicolò Buffi More articles by this author , Rodolfo HurleRodolfo Hurle More articles by this author , Alberto SaitaAlberto Saita More articles by this author , Paolo CasalePaolo Casale More articles by this author , and Giorgio GuazzoniGiorgio Guazzoni More articles by this author View All Author Informationhttps://doi.org/10.1016/j.juro.2018.02.2593AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookTwitterLinked InEmail INTRODUCTION AND OBJECTIVES Targeted fusion biopsy using multiparametric magnetic resonance imaging (mpMRI) and transrectal ultrasound (TRUS) learning curve (LC) has not been yet evaluated for large series of patients. We tested the hypothesis that urologist experience may improve clinically significant Pca (csPCa) detection rate of targeted mpMRI-US fusion biopsy METHODS This is a prospective, longitudinal study including 394 consecutive patients who underwent mpMRI-US targeted (TB) and transrectal standard biopsy (SB) for suspicion of PCa at a single institution from April 2015 to September 2017. All the procedures were carried out by two urologists using the Bio-Jet™ fusion system and software (D&K Technologies, Barum, Germany) while mpMRI studies were reported by different experienced radiologists. Biopsies were performed either in a transrectal or transperineal setting depending on the location of the primary lesion on the mpMRI. The cohort was divided into sestiles representing consecutive times during the study period. Overall targeted biopsy PCa detection rate (TB-CDR) and csCDR at TB were reported and stratified according to progression groups. Sensitivity, specificity and negative predictive value of MRI-US TB were calculated. Chi square for trend analyses were used to assess the statistical significance of CDR Linear regression analyses were performed to estimate the impact of LC on the ability to diagnose csPCa. RESULTS Median patient age was 65 yrs (R:32-86) and median PSA at biopsy was 7 ng/ml (R: 3.4-56 ng/ml). Cancer detection rate at TB was 43.7% (n=172), of these patients 76% (n=130) had csPCa. Targeted biopsy CDR increased from 36.9 % (n=24) to 62.1 % (n=41) from group A to group F (p=0.004). Similarly, csCDR at TB increased significantly from group A (23.1%, n=15) to group F (44%, n=29) (p=0.01). Sensitivity, specificity, NPV and PPV of TB in detecting csPCa was 75.6%, 93.2%, 83% and 90% respectively. At linear regression analyses, assessing learning curve impact, diagnostic accuracy of TB showed a significant trend on csCDR (R2=0.3 p<0.001). CONCLUSIONS Our findings suggested that the operator LC may have an impact on csCDR of TB in larger series. Consequently, mpMRI/US fusion biopsies appear to have "a steep learning curve", as the diagnostic accuracy of the procedure appears to progress over time even after a high number (>300) of procedures. © 2018FiguresReferencesRelatedDetails Volume 199Issue 4SApril 2018Page: e1028-e1029 Advertisement Copyright & Permissions© 2018MetricsAuthor Information Giuliana Lista More articles by this author Giovanni Lughezzani More articles by this author Massimo Lazzeri More articles by this author Davide Maffei More articles by this author Pasquale Cardone More articles by this author Piergiuseppe Colombo More articles by this author Nicolò Buffi More articles by this author Rodolfo Hurle More articles by this author Alberto Saita More articles by this author Paolo Casale More articles by this author Giorgio Guazzoni More articles by this author Expand All Advertisement Advertisement PDF downloadLoading ...