['Determine the relative frequency of having a uterine septum or bicornuate uterus in women presenting with first trimester recurrent pregnancy loss and a divided uterine cavity by hysterosalpingography (HSG) or hysteroscopy.', 'Retrospective analysis of the frequency of a uterine septum or a bicornuate uterus in all patients undergoing surgery (laparoscopy and hysteroscopy) with the clinical presentation of recurrent pregnancy loss and a divided uterine cavity between January 1995 and October 2002.', 'An academic medical center.', 'Thirty-five consecutive, premenopausal women with a divided uterine cavity on preoperative HSG or hysteroscopy.', 'Diagnostic laparoscopy and diagnostic hysteroscopy. MAIN OUTCOME MEASURE (S): A fused uterine fundus at laparoscopy indicating a uterine septum.', 'All 35 patients had a uterine septum.'] Is recurrent first trimester pregnancy loss associated with uterine septum but not with bicornuate uterus?