Algorithms for Ovarian Cancer Surgery The ESGO 2017 ovarian cancer surgical guidelines algorithms were translated into the ESGO Guide mobile app. The update of the guidelines and algorithms is planned for 2025-2026. -> Click here to download the full-size algorithms 2017 for advanced ovarian cancer surgery. ESGO Algorithms App Get started and download the ESGO Algorithms App! Available for iPhone, iPad and Android Devices.