Recurrent empty follicle syndrome.

We report a case of a recurrent empty follicle syndrome. The patient was admitted to our intracytoplasmic injection program because of her partner's azoospermia. Ovarian stimulation was accomplished using gonadotrophin therapy after treatment with oral contraceptive pills followed by gonadotrophin-releasing hormone agonist. Thirty-six hours after the administration of HCG (human chorionic gonadotrophins), transvaginal oocyte retrieval yielded no oocytes despite the aspiration and flushing of all available follicles. Two years later, a second treatment cycle was started using the same pituitary desensitisation and ovarian stimulation regimens. HCG from a different batch with respect to that used in the first treatment cycle was administered. Aspiration and repeated flushing of all follicles of one ovary failed to yield any identifiable oocyte. The beta-HCG and progesterone serum concentrations on the day of retrieval were 181 mIU/mL and 3.79 ng/mL, respectively. New oocyte retrieval was planned 6 h after the first attempt for aspiration of follicles. Again, no ova were obtained at this second trial despite the aspiration of the all follicles. As to our knowledge this is the first report of recurrent EFS (empty follicle syndrome) and managed without repeating the HCG injection on the day of unsuccessful oocyte retrieval.