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BACKGROUND: Few predictive models aimed at predicting the presence of lymph node invasion (LNI) in patients with prostate cancer (PCa) treated with extended pelvic lymph node dissection (ePLND) are available to date. OBJECTIVE: Update a nomogram predicting the presence of LNI in patients treated with ePLND at the time of radical prostatectomy (RP). DESIGN, SETTING, AND PARTICIPANTS: The study included 588 patients with clinically localised PCa treated between September 2006 and October 2010 at a single tertiary referral centre. INTERVENTION: All patients underwent RP and ePLND invariably including removal of obturator, external iliac, and hypogastric nodes. MEASUREMENTS: Prostate-specific antigen, clinical stage, and primary and secondary biopsy Gleason grade as well as percentage of positive cores were included in univariable (UVA) and multivariable (MVA) logistic regression …