阴道斜隔综合征发病率低，Burgis 等曾报道发病率为0.1 %～3.8 %，其临床上有3 种分型，不同类型的斜隔综合征临床表现各不同，阴道斜隔综合征合并妊娠常因复杂的生殖道畸形造成人工流产困难。本文通过报告3 种类型的斜隔综合征患者终止非意愿性妊娠各一例，说明阴道斜隔综合征合并妊娠在诊断和处理上有一定的难度，存在误诊和漏诊，因此需要临床医师、超声医师共同提高对该病的认识，提高诊断准确性，从而指导临床治疗。

Burgis et al. reported the incidence of oblique vaginal septum syndrome (OVSS ) is 0.1 %～3.8 %. There are 3 types，and different types of OVSS have different clinical presentations.Induced abortion is hard for patients of OVSS with pregnancy，because of their complex reproductive tract anomalies. This article reported 3 types OVSS with unwanted pregnancy，1 case of each type. Through these cases，we can draw a conclusion that the diagnois and treatment of these patients are difficult，it tends to be ignored and easily misdiagnosed. So clinicians and sonographers should raise awareness of this kind of Müllerian duct anomalies；it is important to diagnose exactly and cure correctly.