No verified publication matching the named retrospective cohort was identified, so its spontaneous-pregnancy results cannot be confirmed. A separate 2021 study reported pregnancy outcomes after assisted reproductive technology (ART), not spontaneous conception, and therefore does not establish whether stripping or ethanol sclerotherapy leads to more spontaneous pregnancies.
Is the named retrospective cohort verified?
The study described in the title—a retrospective comparison of spontaneous pregnancy after laparoscopic ovarian endometrioma treatment by stripping versus ethanol sclerotherapy—could not be verified in the available sources. Its bibliographic details, patient characteristics, follow-up, spontaneous-pregnancy rates, and comparative effect are therefore unknown. That does not prove the study does not exist; it means its findings cannot responsibly be reported here.
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In particular, there is no confirmed result showing which treatment produced more spontaneous pregnancies, how long patients took to conceive, or whether any difference was statistically meaningful.
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What a separate 2021 study found—and what it did not
A 2021 prospective cross-sectional study enrolled 101 infertile patients with unilateral endometriomas. It compared a cystectomy group of 57 patients who proceeded to ART after a year without spontaneous pregnancy following laparoscopic cystectomy with 44 patients who underwent ethanol sclerotherapy at oocyte retrieval. Its reported pregnancy outcomes concerned ART, not spontaneous conception after a direct treatment comparison.
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| Outcome in the 2021 study | Cystectomy group | Ethanol sclerotherapy group | How to read the comparison |
|---|---|---|---|
| Clinical pregnancy after ART | 42.1% | 34.1% | The authors reported no statistically significant difference. |
| Live birth after ART | 38.6% | 29.5% | The authors reported no statistically significant difference. |
| Recurrence | 14.0% | 34.1% | The authors reported higher recurrence in the sclerotherapy group; reported p = .017. |
These figures belong only to that study’s groups and follow-up. They are not spontaneous-pregnancy rates, and the cystectomy-versus-sclerotherapy ART comparison cannot be substituted for the title’s stripping-versus-ethanol cohort.
Why another IVF study does not answer the question
A separate retrospective cohort studied women with moderate-to-severe endometriosis who underwent IVF. It compared 37 women who received ethanol sclerotherapy with 37 whose endometrioma was left in place, and its focus was cumulative live birth after IVF. Because it did not compare stripping with sclerotherapy or assess spontaneous pregnancy as the title specifies, it cannot establish which treatment leads to more natural conceptions.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What would be needed to compare spontaneous pregnancy fairly?
A useful interpretation of the exact cohort would require its actual methods and results, not adjacent ART studies. At minimum, readers would need to know:
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- Spontaneous-pregnancy rates and time to pregnancy in each treatment group.
- How long participants were followed and how recurrence was assessed.
- How ovarian reserve and complications were measured.
- Whether the groups differed in age, infertility history, disease severity, or bilateral disease.
- Whether the analysis adjusted for those baseline differences and other fertility factors.
Without those details, a treatment advantage cannot be inferred from the title or from outcomes in different study populations.
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