저자등은 본원 산부인과에서 일측에 복벽기열이 있는 쌍태임신에서 생존태아와 복벽기열태아를 분만하였기에 보고하는 바이다.

Twin pregnancies have a higher rate of premature delivery than singleton pregnancies and a substantially higher perinatal mortality. Twin gestation complicted by a single anomalous fetus diffculties in obstetric management. Options available to patients include continuing the entire pregnancy, selective termination of the anomalous fetus, or termination of the entire pregnancy. The incidence of one anomalous fetus in twin pregnancy is rare. Gastroschisis is intestinal herniation through a defect in the anterior abdominal wall usual ly to the right of umblicus. There is no sac and the intestines are covered with a thickened inflammatory exudate. Most case of gastroschisis occur sporadically and chromosomal anomaly are less common. A case of one gastroschisis in twin pregnancies diagnosed by ultrasonography is reported with a brief review of the literature.