본원산부인과에서는 흉부유착중복아의 분만을 제왕절개술로 시행한 드문일예를 경험하였기 에 문헌적 고찰과 함께 보고하는 바이다.

If twining is initiating after the embryonic disc and the rudimentary amnionic sac have been formed and if division of the embryonic disc is incomplete conjoined twins result. United or conjoined twins are commonly referred to as siamese twins after chang and Eng Bunker of Siam, who were displayed worldwide by P.T Barnum. When each of the joined twins is nearly complete , the commonly shared body site may be (1) anterior (2) posterior, (3) Cephalic and (4) caudal. The majoirty are of the thoracopagus variety. The frequency of conjoined twins is not well established . The majority of all conjoined twins were diagnosed at birth or roentgenographically . delivery mode was both by vaginal and Cesarean routes. Vagional delivery is possible in many cases of conjoined twins because of tissue flexibility and prematurity. however because dystocia is common, cesarian section is the delivery route of choice in not antenatally diagnosed cases of conjoined twins. We experineced a cases of thoracopagus with IUFD with eclampsia in 23-year old woman. We present this case with a brief review of the literatures.