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Uterine malformations consist of a group of miscellaneous congenital anomalies of the female genital system. Their mean prevalence in the general population and in the population of fertile women is ∼4.3%, in infertile patients ∼3.5% and in patients with recurrent pregnancy losses ∼13%. Septate uterus is the commonest uterine anomaly with a mean incidence of ∼35% followed by bicornuate uterus (∼25%) and arcuate uterus (∼20%). It seems that malformed uterus and especially septate uterus is not an infertility factor in itself. However, it may have a part in the delayed natural conception of women with mainly secondary infertility. On the other hand, patients with uterine malformations seem to have an impaired pregnancy outcome even as early as their first pregnancy. Overall term delivery rates in patients with untreated uterine malformations are only ∼50% and obstetric complications are more …