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김형석(HS Kim),고경수(KS Ko),오도산(DS Oh),이준형(JH Lee),김영리(YL Kim),이의진(EJ Lee) 대한산부인과학회 1996 Obstetrics & Gynecology Science Vol.39 No.5
Conjoined twins are commonly refered to as siamese twins, after Chang and Eng Bunker of Siam(Thiland), who were displayed worldwide by P.T.Barnum. The incidence is from 1 in 30,000 to 1 in 200,000 live births. Two thrid of conjoined twins are females. Etiology is unknown. Monozygotic twins arise form a single blastocyst that undergoes duplication between the 1st and 10th day after ovulation. Conjoined twins are commonly regarded as an abnormolity of the process of monozygotic twinning, because of an incomplete division of the embryonic cell mass at one pole or at a point between the poles. Conjoined twins are a sporadic event that tends not to recur. We report a case of conjoined twins with brief review for literatures.