AUTHOR=Kellerhals GaƩtan , Nef James , Hurni Yannick , Huber Daniela TITLE=Transvaginal natural orifice transluminal endoscopic surgery for early-stage ovarian cancer and borderline ovarian tumors: a case series JOURNAL=Frontiers in Surgery VOLUME=12 YEAR=2025 URL=https://www.frontiersin.org/journals/surgery/articles/10.3389/fsurg.2025.1542486 DOI=10.3389/fsurg.2025.1542486 ISSN=2296-875X