Study Finds Bilateral Salpingectomy May Dramatically Lower Ovarian Cancer Risk: Study

Hope in the Fight Against Ovarian Cancer

Ovarian cancer, particularly its most common and lethal form—high-grade serous carcinoma (HGSC)—remains one of the greatest challenges in women’s health, with a five-year survival rate below 50%. A promising preventive measure has emerged: opportunistic bilateral salpingectomy (OBS), or the removal of the fallopian tubes during another pelvic surgery while keeping the ovaries intact. OBS has been recognized as safe, cost-effective, and, according to new research, potentially transformational in lowering ovarian cancer risk.

What the Study Did: A Population-Based Approach

Researchers from a multi-institutional team aimed to robustly assess whether OBS truly reduces the risk of serous ovarian cancer. They analyzed records from British Columbia, Canada, spanning 2008 to 2020, focusing on individuals who underwent OBS, hysterectomy, or tubal ligation. The study included over 85,000 patients, making it one of the most comprehensive analyses to date.

To further validate their results, the team also gathered global data on ovarian cancers occurring in patients without fallopian tubes and compared these numbers to historical patterns.

Key Findings: Striking Reduction in Cancer Risk

The results are compelling: women who underwent OBS experienced an estimated 78% reduction in serous ovarian cancer risk compared to those who had hysterectomy or tubal ligation alone (hazard ratio 0.22). Notably, the risk for breast cancer did not differ between groups, suggesting the findings are specific to ovarian cancer and not due to general health differences.

In the international pathology dataset, only 23.1% of ovarian cancers in women without fallopian tubes were the aggressive HGSC type, compared to 68.1% among women who retained their tubes—a highly significant difference. This shift supports the hypothesis that the fallopian tubes are often the origin of these deadly tumors.

Limitations and Implications

While some patients in the study were younger than the peak risk age for ovarian cancer—potentially limiting the number of observed cases—the large scale and thorough methodology add credibility to these findings. The study encourages broader adoption of OBS during other pelvic surgeries as a proactive, low-risk measure to prevent ovarian cancer and save lives.

The Bottom Line

This research adds strong, population-level evidence that opportunistic bilateral salpingectomy is a safe and powerful intervention to prevent high-grade serous ovarian cancer, with minimal downsides and significant public health implications.

Key Takeaways

Women undergoing fallopian tube removal during pelvic surgeries had up to 80% lower risk of serous ovarian cancer.

The procedure did not affect risk of breast cancer, pointing to a specific protective effect.

International data showed a dramatic drop in the most aggressive ovarian cancer type (HGSC) after salpingectomy.

OBS is proven safe, cost-effective, and does not hasten menopause.

Broad implementation of OBS could greatly reduce ovarian cancer incidence and mortality.

Citation:

Ramlogan Sowamber et al. "Serous Ovarian Cancer Following Opportunistic Bilateral Salpingectomy." JAMA Network Open. 2026;9(2):e2557267. doi:10.1001/jamanetworkopen.2025.57267.