Consultant, Gynaecologic Oncology and Gynaecology Laparoscopic and Robotic Surgery, Fortis Hospital, Yeshwanthpur, Bangalore
Part 9 of 13 in Overview of Gynaecological Cancers
Why Tubal Ligation Cuts Ovarian Cancer Risk by 64%
April 26, 2026
Ovarian cancer's name is slightly misleading. A large share of it doesn't actually start in the ovary.
The fallopian tube's outsized role
In 64 percent of cases, the fallopian tube, not the ovary itself, is the source of the abnormal cell that seeds ovarian cancer. That single fact explains why tubal ligation reduces ovarian cancer risk by roughly the same 64 percent, and why removing the tubes alone, without touching the ovaries, has become a deliberate preventive strategy in its own right.
A preventive step that costs almost nothing extra
Opportunistic salpingectomy, removing the fallopian tubes during an unrelated procedure like a myomectomy or hysterectomy in a woman in her forties who doesn't want future fertility, adds negligible risk to a case already underway while meaningfully lowering future ovarian cancer risk.
The theory behind why ovulation itself is a risk factor
The incessant ovulation theory holds that nulliparity, early menarche and late menopause all add up to more lifetime ovulation cycles, and each cycle's wear and repair carries a small chance of a mutation taking hold. Oral contraceptive use for more than five years cuts ovarian cancer risk by 50 percent for the same underlying reason: fewer ovulation cycles over a lifetime. Multiparity, breastfeeding and hysterectomy are also protective.
This guide is based on a live Jivo Masterclass — Dr. Punyashree R M taught doctors across Africa on April 26, 2026.
FROM THE LIVE Q&A
Dr. Isaya (Tanzania)
Which technique do you recommend for sentinel lymph node biopsy?
Dr. Punyashree R M
We use ICG dye and do the procedure robotically or laparoscopically with a 4K camera using the Firefly technique. We always open the retroperitoneal spaces first and get everything ready before injecting, because if there's bleeding during dissection after injecting, you won't be able to locate the sentinel node properly. If you're implementing this for the first time, do a pilot study of at least 25 cases each for endometrial and cervical cancer before using it as your standard method.
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Frequently Asked Questions
What are the post-operative morbidities associated with radical hysterectomy with lymph node dissection?▼
The most common complication is urinary issues, in about one or two out of every hundred patients we operate on, because we try carefully to identify and spare the inferior hypogastric nerve. Unlike axillary lymph node dissection, we don't see lymphoedema with the same frequency after pelvic lymph node dissection. We also follow the ERAS protocol, enhanced recovery after surgery, ambulating the patient the same day and starting oral intake within hours.
What are the preventive measures for PCOS?▼
PCOS is a lifestyle disease. If you correct the lifestyle, your hormones should be under control. We explain to patients what's causing the imbalance rather than putting them on hormonal pills upfront, and give them 3 to 4 months to work on diet, exercise, stress management and sleep, alongside antioxidant medications. 60 to 70 percent of our patients come back at the end of 3 months saying they're having regular cycles.
Is fertility-sparing treatment appropriate for ovarian cancer?▼
Fertility-sparing treatment is done only if the lady desires fertility, the disease is early, confined to one single ovary, with no peritoneal deposits and no malignant cells in the ascites. Even at stage 1B we'd do a diagnostic laparoscopy to check the other ovary, because imaging might miss small deposits. For germ cell tumours we always do fertility-sparing surgery because they're highly chemosensitive; for other tumours the decision has to be tailor-made.
How do we manage advanced stage cervical cancer?▼
If it's an advanced stage, stage 3 or 4, treatment is usually chemotherapy with radiation therapy. Squamous cell carcinomas are radiosensitive, and chemotherapy is given as a radiosensitiser to get a better response. If there's stage 4 disease with distant metastasis, systemic therapy is needed. Even after this, if there's residual disease and the patient's performance status is good, we'd still go back and remove the residual disease.
Which technique do you recommend for sentinel lymph node biopsy?▼
We use ICG dye and do the procedure robotically or laparoscopically with a 4K camera using the Firefly technique. We always open the retroperitoneal spaces first and get everything ready before injecting, because if there's bleeding during dissection after injecting, you won't be able to locate the sentinel node properly. If you're implementing this for the first time, do a pilot study of at least 25 cases each for endometrial and cervical cancer before using it as your standard method.
Why does tubal ligation reduce ovarian cancer risk?▼
In 64 percent of cases, the fallopian tube, not the ovary itself, is the source of the abnormal cell that seeds ovarian cancer, which is why tubal ligation reduces risk by roughly the same 64 percent.
What is opportunistic salpingectomy?▼
It's the removal of the fallopian tubes during an unrelated procedure, like a myomectomy or hysterectomy, in a woman who doesn't want future fertility. It adds negligible risk to a case already underway while meaningfully lowering future ovarian cancer risk.
What is the incessant ovulation theory?▼
It holds that nulliparity, early menarche, and late menopause all add up to more lifetime ovulation cycles, and each cycle's wear and repair carries a small chance of a mutation taking hold.
Do birth control pills reduce ovarian cancer risk?▼
Yes. Oral contraceptive use for more than five years cuts ovarian cancer risk by 50 percent, for the same reason as tubal ligation: fewer ovulation cycles over a lifetime.
In This Series: Overview of Gynaecological Cancers
- 1.Overview of Gynaecological Cancers
- 2.Cervical Cancer: The Only Cancer That Can Be Eliminated Worldwide
- 3.Why India's HPV Vaccine Costs a Fifth of Gardasil
- 4.Reading an Abnormal Pap Smear: When to Biopsy, When to Just Watch
- 5.Endometrial Cancer Is the Fastest-Rising Cancer in the World
- 6.The Molecular Subtypes That Now Decide Endometrial Cancer Treatment
- 7.When an IVF Patient's Endometrial Biopsy Comes Back Abnormal
- 8.Ovarian Cancer: Why It's Called the Silent Killer
- 9.Why Tubal Ligation Cuts Ovarian Cancer Risk by 64%
- 10.Fertility-Sparing Surgery for Ovarian Cancer: Who Actually Qualifies
- 11.Vulvar Cancer: A Diagnosis Many Women Delay Reporting
- 12.How Sentinel Lymph Node Mapping Actually Works
- 13.Why Nerve-Sparing Radical Hysterectomy Has Fewer Complications Than You'd Expect