Endometriosis Explained Episode 8
๐คWhen Is Surgery Needed for Endometriosis?
Surgery is not automatically required for every woman with endometriosis.
According to current guidance, the decision should be individualized according to:
• Severity of pain
• Response to medical treatment
• Organ involvement or dysfunction
• Fertility goals
• Extent and complexity of disease
• Previous surgery and ovarian reserve.
The 2026 SOGC guideline specifically states that surgery should be planned around the patient’s goals, symptoms and disease extent, with indications including pelvic pain, organ dysfunction and infertility.
๐ฅWhen may surgery be considered?
Surgery may be appropriate when:
• Pain remains severe despite adequate medical therapy
• There is significant distortion of pelvic anatomy
• An endometrioma requires treatment
• Deep endometriosis affects the bowel, bladder or ureter
• There is obstruction or threatened organ function
• Fertility may benefit from surgical treatment in selected patients
• Imaging or clinical findings raise concern requiring definitive assessment or treatment.
๐ฅบExcision or ablation?
Current evidence favours excision over ablation, especially for deep lesions, because excision removes the full depth of disease and allows histopathological confirmation. The guideline recommends aiming for complete excision when feasible.
๐ฑWhat about ovarian endometriomas?
For endometriomas, cystectomy is generally more effective than cyst ablation for pain, recurrence prevention and fertility outcomes.
But there is an important trade-off:
Cystectomy can reduce ovarian reserve, particularly in women with:
• Low pre-operative AMH
• Large endometriomas
• Bilateral endometriomas
• Previous ovarian surgery.
So preserving ovarian tissue should be part of the surgical plan.
๐คDoes hysterectomy cure endometriosis?
Not necessarily.
Hysterectomy may reduce recurrence and reoperation risk in carefully selected women who do not desire future fertility, especially when uterine disease or adenomyosis contributes to symptoms.
But removing the uterus does not automatically remove all endometriosis, because lesions may exist outside the uterus.
And importantly:
Routine removal of both ovaries in premenopausal women is not recommended.
The guideline notes that bilateral oophorectomy does not reliably improve pain or satisfaction, while increasing risks such as cardiovascular disease, osteoporosis and sexual dysfunction.
๐ Guideline Pearl
The goal of endometriosis surgery is not simply to “remove everything.” It is to treat disease while preserving organ function, fertility and quality of life whenever possible.
๐ Surgery should be tailored to the woman not just to the stage of disease.
Dr Rabab Cares
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