OBJECTIVE: To evaluate the effectiveness of hysteroscopic metroplasty under laparoscopic guidance in the treatment of infertile women with a diagnosis of septate uterus and the impact of this surgical procedure on reproductive outcome. STUDY DESIGN: From January 1996 to December 2000, 36 women referred to our endoscopy center underwent hysteroscopic metroplasty. Follow-up covered the incidence of pregnancy, term pregnancies and mode of delivery. RESULTS: The mean age of the patients was 31.9 +/- 3.9 years (range, 23-39). One patient (3%) dropped out during follow-up. There were no intraoperative or postoperative complications. The mean interval from metroplasty to conception was 11.3 +/- 9.2 months (range, 2.0-35.5). Twenty of 35 (57%) women had a history of > or = 1 spontaneous abortions, and 18 of the 20 (90%) achieved pregnancy, with 15 of 18 (83%) term deliveries (10 vaginal deliveries and 5 cesarean sections). Fifteen of 35 patients (43%) were nulliparous, and 8 of 15 (53.3%) had term deliveries (1 cesarean section). CONCLUSION: Hysteroscopic metroplasty under laparoscopic guidance is safe, allows spontaneous delivery and short-term pregnancy planning, is particularly successful in infertile women with a history of > or = 1 spontaneous abortions.