双胎输血综合征,双子宫双胎及联体双胎等是双胎妊娠时的特殊情况,孕妇并发症多,胎儿死亡率亦高,但如能及时诊断,正确处理,可以保护母体,提高围产儿存活率。介绍了其发病机理并强调指出,双胎输血综合征仅发生于单卵双胎,根据胎盘绒毛膜血管短路的大小及形态,其临床症状及预后亦不同,迅速纠正新生儿的贫血及多血是治疗的关键。本文另一则病案为双子宫双胎,虽较少见,但其并发症则较多,妇科检查时如发现有阴道纵膈,应及时进一步作有关检查。最后一则病例为联体双胎,此为罕见的畸形,如能在产前明确诊断,则可进行适当处理。 Twin blood transfusion syndrome, twin uterus and twin such as the twin pregnancy is a special case of twin pregnancy, pregnant women, complications, fetal mortality is also high, but if timely diagnosis and proper treatment can protect the mother and improve Perinatal survival rate. The pathogenesis is introduced and it is emphasized that twin transfusion syndrome occurs only in monozygotic twins. According to the size and shape of placental chorionic vasculature, its clinical symptoms and prognosis are also different, and the anemia and multiple blood of neonates are quickly corrected Is the key to treatment. This article is another case of dual uterine twins, although less common, but more complications, gynecological examination, such as the discovery of a mediastinal mediastinum, should be promptly further related to the inspection. The last case is a conjoined twins, which is a rare deformity that can be properly treated if it is clearly diagnosed in the prenatal period.