The intersection of endometriosis and infertility represents a substantial burden on global maternal health services. Despite advancements in in vitro fertilization (IVF), the role of surgical excision as a primary fertility-enhancing intervention remains a subject of active debate. This study addresses a critical gap in clinical knowledge regarding the longitudinal success of surgical management in the context of modern reproductive medicine. By providing robust evidence on spontaneous conception rates post-excision, this research helps clinicians advise patients on the 'surgery-first' vs. 'IVF-first' pathways. Furthermore, understanding the nuances of how different rASRM stages respond to excision allows for more personalized treatment planning. In an era of increasing reliance on ART, demonstrating the efficacy of conservative surgery emphasizes the importance of preserving natural reproductive function and reducing the physiological and financial strain associated with repeated IVF cycles. These findings are essential for developing evidence-based guidelines for reproductive specialists.
To evaluate the impact of laparoscopic excisional surgery on clinical pregnancy rates in infertile women with histologically confirmed endometriosis across various disease stages.
A prospective cohort study was conducted over a five-year period involving 412 reproductive-aged women (median age 31.4 years) presenting with primary or secondary infertility and suspected endometriosis. All participants underwent laparoscopic excision performed by specialized reproductive surgeons. Disease severity was classified using the Revised American Society for Reproductive Medicine (rASRM) criteria. Endometriotic implants were excised using cold scissors or electrosurgical techniques, and pelvic anatomy was restored. Patients were followed for a minimum of 24 months postoperatively. The primary endpoint was the cumulative clinical pregnancy rate (CPR), confirmed by fetal heart activity on ultrasound. Secondary endpoints included time to conception and the requirement for assisted reproductive technology (ART). Statistical analysis utilized Kaplan-Meier survival curves to estimate conception probability over time, and Cox proportional hazards models were employed to identify predictors of surgical success. P-values < 0.05 were considered statistically significant, with adjustments made for maternal age and baseline ovarian reserve.
A total of 412 patients were analyzed, categorized into Stage I/II (n=238) and Stage III/IV (n=174). The overall cumulative pregnancy rate at 24 months post-excision was 58.3%. In the Stage I/II group, the CPR was 64.7%, whereas the Stage III/IV group achieved a CPR of 49.4% (p < 0.01). Spontaneous conception accounted for 72% of the achieved pregnancies. The median time to conception was 8.4 months (95% CI: 7.2–9.6). Patients under 35 years of age showed a significantly higher success rate (OR 2.14, 95% CI: 1.45–3.16) compared to those over 35. For patients with deep infiltrating endometriosis (DIE), the inclusion of bowel or bladder excision did not negatively impact pregnancy outcomes, yielding a CPR of 44.2%. Importantly, the rate of intrauterine insemination (IUI) success increased from 12.1% pre-operatively to 28.5% post-operatively (p=0.004). No major surgical complications were reported, and the rate of symptom recurrence at 24 months was 14.8%.
Laparoscopic excision of endometriosis significantly improves the likelihood of achieving a clinical pregnancy, particularly within the first 12-18 months post-surgery. The results underscore that surgical intervention is not merely palliative for pain but a critical restorative treatment for fertility. While advanced-stage disease (rASRM III/IV) continues to present a challenge, the substantial increase in spontaneous conception rates following anatomical restoration justifies the surgical approach over immediate IVF in selected populations. Clinicians should consider early referral for laparoscopic excision in endometriosic patients failing to conceive. These findings advocate for a multidisciplinary approach where surgical expertise is integrated into the fertility treatment algorithm to optimize outcomes and potentially reduce the need for high-cost assisted reproductive technologies. Research into the synergistic effects of surgery and postoperative follicular stimulation is warranted to further refine patient management strategies.