You have accessJournal of UrologyPenile & Testicular Cancer: Penile & Testicular Cancer II (PD53)1 Sep 2021PD53-03 LONG TERM OUTCOMES OF DYNAMIC SENTINEL LYMPH NODE BIOPSY (DSNB) FOR CLINICALLY IMPALPABLE (CN0) PENILE CANCER PATIENTS-AN EUROGEN STUDY Edoardo Pozzi, Omer Onur Cakir, Fabio Castiglione, Nicolo' Schifano, Paul Hadway, Raj Nigam, Rowland Rees, Maarten Albersen, Arie Parnham, Maurice Lau, Hussain M. Alnajjar, Vijay Sangar, and Asif Muneer Edoardo PozziEdoardo Pozzi More articles by this author , Omer Onur CakirOmer Onur Cakir More articles by this author , Fabio CastiglioneFabio Castiglione More articles by this author , Nicolo' SchifanoNicolo' Schifano More articles by this author , Paul HadwayPaul Hadway More articles by this author , Raj NigamRaj Nigam More articles by this author , Rowland ReesRowland Rees More articles by this author , Maarten AlbersenMaarten Albersen More articles by this author , Arie ParnhamArie Parnham More articles by this author , Maurice LauMaurice Lau More articles by this author , Hussain M. AlnajjarHussain M. Alnajjar More articles by this author , Vijay SangarVijay Sangar More articles by this author , and Asif MuneerAsif Muneer More articles by this author View All Author Informationhttps://doi.org/10.1097/JU.0000000000002080.03AboutPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissionsReprints ShareFacebookLinked InTwitterEmail Abstract INTRODUCTION AND OBJECTIVE: Dynamic sentinel lymph node biopsy (DSNB) is routinely offered to patients presenting with penile cancer ³T1G2 and clinically impalpable inguinal lymph nodes (cN0). We aimed to assess the diagnostic accuracy of DSNB, cancer specific survival (CSS) in patients with positive DSNB and positive LN at further radical lymph node groin dissection (RLND). METHODS: An eUROGEN retrospective study of 509 penile cancer patients undergoing DSNB. Age, type of primary surgery, complications after DSNB, tumour stage, tumour grade were all reported. Number of true positives, true negatives, false negatives and false positives were recorded. False negative was defined as inguinal lymph node recurrence within 12 months from a previous negative DSNB. Sensitivity and specificity of DSNB were calculated. Kaplan-Meier analysis was used to estimate the 5-years CSS and recurrence free-survival rates among patients with positive DNSB and RLND. RESULTS: Overall, 509 patients with cN0 penile cancer were identified. The median follow-up for local recurrence and CSS were 62.5 months (IQR 28.5-91) and 63.5 months (IQR 26.5-90) respectively. All patients underwent DSNB at the time of primary surgery or as a delayed procedure. A total of 993 groins were studied. 37 patients had positive histology at DSNB. 37 patients underwent further RLND with 34 of them having positive histology at RLND. At DSNB true positives were 37 (7.27%), false negatives 3 (0.59). Sensitivity and specificity were 92.5% and 100% respectively. Multivariable Cox regression analysis identified positive LN histology both at DSNB and at RLND as predictors for reduced CSS (HR 4.59, CI: 2.35-8.95, p<0.0001) and (HR 5.64, p = 0.0004). Likewise, positive LN histology at DSNB and RLND was a predictor for reduced recurrence free survival HR 4.04 and HR 6.98 all p<0.0001. At Kaplan-Meier analysis, the 5-years CSS for positive LN histology at DSNB/RLND were 69.7% and 69.6% respectively. CONCLUSIONS: DSNB is now an established procedure with a sensitivity of 92.5%. Positive histology after DSNB and subsequent RLND is a strong predictor of reduced CSS and recurrence free survival. Source of Funding: n/a © 2021 by American Urological Association Education and Research, Inc.FiguresReferencesRelatedDetails Volume 206Issue Supplement 3September 2021Page: e917-e917 Advertisement Copyright & Permissions© 2021 by American Urological Association Education and Research, Inc.MetricsAuthor Information Edoardo Pozzi More articles by this author Omer Onur Cakir More articles by this author Fabio Castiglione More articles by this author Nicolo' Schifano More articles by this author Paul Hadway More articles by this author Raj Nigam More articles by this author Rowland Rees More articles by this author Maarten Albersen More articles by this author Arie Parnham More articles by this author Maurice Lau More articles by this author Hussain M. Alnajjar More articles by this author Vijay Sangar More articles by this author Asif Muneer More articles by this author Expand All Advertisement Loading ...