Laparoscopy was performed in 25 consecutive patients with two or more (range 2-6, mean 2.8) histologically documented first-trimester abortions in whom the well-established causes for recurrent miscarriages had been excluded. Endometriosis could not be diagnosed in any of the 25 women. Thus our results are against endometriosis as a cause of repeated abortion and do not support the routine inclusion of laparoscopy in the evaluation of the patient with recurrent abortions.