You have accessJournal of UrologyKidney Cancer: Surgical Therapy VII1 Apr 2015MP84-09 MULTICENTER VALIDATION OF ABILITY OF SURGEON ASSESSMENT OF RENAL PRESERVATION IN COMPARISON TO MEASUREMENT WITH 3D IMAGE ANALYSIS Conrad Tobert, Toshio Takagi, Michael Liss, Hak Lee, Ithaar Derweesh, Steven Campbell, and Brian Lane Conrad TobertConrad Tobert More articles by this author , Toshio TakagiToshio Takagi More articles by this author , Michael LissMichael Liss More articles by this author , Hak LeeHak Lee More articles by this author , Ithaar DerweeshIthaar Derweesh More articles by this author , Steven CampbellSteven Campbell More articles by this author , and Brian LaneBrian Lane More articles by this author View All Author Informationhttps://doi.org/10.1016/j.juro.2015.02.1976AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookTwitterLinked InEmail INTRODUCTION AND OBJECTIVES Baseline renal function and preservation of functioning renal parenchyma are the strongest predictors of function after partial nephrectomy (PN) for presumed renal cancer. Prior studies have confirmed that measurement of volume preservation with 3D imaging (3DVP) is accurate, but limited data exist to compare this time-consuming approach with surgeon assessment of volume preservation (SAVP). We validated the findings of a prior, single-surgeon series with a multi-institutional comparison of 3DVP and SAVP as predictors of renal function after PN. METHODS 3DVP and SAVP were calculated for 157 patients with cross-sectional imaging available from before and after PN. Renal functional outcomes were assessed with univariable and multivariable linear regression methods. RESULTS Median parenchymal preservation was 92% by 3DVP (72%-102%) and 92% by SAVP (70%-97%). 3DVP and SAVP were strongly correlated (p<0.0001) and no significant differences observed in the precision of SAVP assessments made by 13 individual surgeons (p>0.05). Both 3DVP and SAVP were strongly correlated with post-operative GFR (p<0.0001). Univariable analyses revealed that age, preoperative GFR, RENAL score, and each assessment were significant predictors of renal function (p<0.05), and parenchymal preservation was the strongest predictor in multivariable analyses (p<0.0001). Models using 3DVP and SAVP were statistically similar in ability to predict nadir GFR and latest GFR. CONCLUSIONS SAVP has now been validated in a multi-center cohort of PN patients, demonstrating it to provide a reliable estimate of renal functional preservation that is reproducible in contemporary practice. We propose that SAVP reporting should be performed routinely to facilitate analysis of PN outcomes. © 2015 by American Urological Association Education and Research, Inc.FiguresReferencesRelatedDetails Volume 193Issue 4SApril 2015Page: e1061 Advertisement Copyright & Permissions© 2015 by American Urological Association Education and Research, Inc.MetricsAuthor Information Conrad Tobert More articles by this author Toshio Takagi More articles by this author Michael Liss More articles by this author Hak Lee More articles by this author Ithaar Derweesh More articles by this author Steven Campbell More articles by this author Brian Lane More articles by this author Expand All Advertisement Advertisement PDF downloadLoading ...