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Background: Live surgery remains controversial. Although it may improve surgical training and accelerate the dissemination of technical steps of surgical procedures, controversy exists regarding patient safety in live surgery., Objective: To compare the perioperative outcomes of "en bloc" green laser enucleation of the prostate (GreenLEP) performed in workshops during live case demonstration (LCD) and in standard conditions (SCs)., Design, Setting, and Participants: Between June 2015 and January 2017, all consecutive patients who underwent GreenLEP for benign prostatic obstruction performed by a single surgeon were prospectively enrolled. Perioperative data and early postoperative complications according to Clavien-Dindo classification were collected. Workshop programmes started locally according to the European Association of Urology policy on live surgical events in June 2015 to enrol small groups of urologists in the GreenLEP technique., Intervention: Endoscopic enucleation of the prostate using a GreenLight fibre., Outcome Measurements and Statistical Analysis: Outcomes were compared between the LCD and SC groups., Results and Limitations: Of the 126 performed procedures, 37 were performed live during 17 LCDs with a median attendee number of 3. The patients' baseline characteristics were similar in both groups. Intraoperative parameters were comparable: total energy of 62 [53; 77] versus 56kJ [44; 69] (p=0.068), operative time of 61 [53; 71] versus 55min [45; 66] (p=0.1), and morcellating time of 3 [3; 5] versus 4min [2; 6] (p=0.82) in the LCD versus SC group. The catheterisation time (2d [1; 2]) and length of hospital stay (2d [2; 3]) were similar. The overall complication rate was comparable in the LCD (18.9%) and SC (24.7%) groups (p=0.64). Preoperative parameters significantly improved from baseline without any significant differences between the two groups. Limitations included a small number of attendees/workshop, and case selections were made by the surgeon himself., Conclusions: GreenLEP was safe and provided satisfactory functional outcomes in both conditions. From this preliminary study, it seems that LCD did not jeopardise the surgeon's skill or technique. Similar studies are required to further assess patient safety and outcomes associated with live surgical events., Patient Summary: According to the surgeon expertise, endoscopic enucleation of the prostate performed during live case demonstration provided similar functional outcomes to that performed in standard condition and could therefore be considered a safe potential educational tool., (Copyright © 2018 European Association of Urology. Published by Elsevier B.V. All rights reserved.)