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The aim of this study was to assess the effect of coagulation versus suture used for hemostasis during laparoscopic excision of a unilateral endometrioma for outcome of in vitro fertilization (IVF).This retrospective study was set in a university hospital. A total of 44 sterile patients underwent laparoscopic excision of a unilateral ovarian endometrioma. Bipolar electrocoagulation was performed for hemostasis in 21 patients and the remaining 23 patients underwent suturing. Samples of blood were taken on day 3 of menstruation before the operation. Serum levels of anti-Müllerian hormone, follicle-stimulating hormone and estradiol were measured. Number of antral follicles, follicular flushings, oocytes retrieved, and embryos were counted and the outcomes of IVF were recorded.No significant differences in the serum levels of any of the hormones were found between the pre- and postoperative samples, in either group. The mean antral follicle count, number of follicular flushings, oocytes retrieved and embryos obtained were significantly lower in the treated ovary as compared with the corresponding values in the contralateral intact ovary in the suture group. The pregnancy rates were similar in the two groups.There was no difference in the outcome of IVF between the two different methods of hemostasis.