The 4th international office-based endoscopic surgery course will take place from Wednesday 20st until Friday 22nd of May 2026. The course will be entirely in English. On Wednesday and Thursday morning, lectures will be given at Restaurant Valdin, Van Peltlaan 4, Nijmegen. On Wednesday and Thursday afternoon, the hands-on course will take place at the anatomic theatre of the Radboud University Medical Center. On Wednesday and Thursday evening a dinner will be organized for all participants. On Friday morning, video surgery will be performed at the Experience Center of the Radboud University Medical Center, Geert Grooteplein Noord 15, Nijmegen.