摘要:According to the literature the prevalence of congenital uterine anomalies varies between 3.4 and 5.0% and Müllerian anomalies are found more often in subfertile patients compared to fertile controls (Raga et al., 1997; Grimbizis et al., 2001). Congenital malformations of the Müllerian system are probably caused by multifactorial polygenic and familial factors. The prevalence of a unicornuate uterus is rather low (0.3% of the whole population, 0.6% of the infertile population, 0.2% of the fertile population) (Raga et al., 1997). However, of all Müllerain defects unicornuate uterus is found in 3 to 13% of women (Acién, 1997; Raga et al., 1997; Grimbizis et al., 2001). Unicornuate uterus is caused by a failure of one Müllerian duct to develop (unicornuate uterus without rudimentary horn) or to migrate to its proper location. During the third month of foetal life the developing ovaries descend from a position near the kidneys to their final position in the pelvis, this descent is guided by the gubernaculum (Van Voorhis et al., 2000). The gubernaculum is attached to the uterus forming the utero-ovarian and round ligament.