Population-based data of all women undergoing hysterectomy or tubal permanent contraception in British Columbia between 2008 and 2020, opportunistic bilateral salpingectomy was associated with an ~80% reduction in serous ovarian cancer risk and a marked shift away high-grade tumors among post-salpingectomy cancers, reinforcing the fallopian tube as the key site of origin. | Sowamber, JAMA Netw Open 2026
