RESUMEN
Twin Pregnancies are increasing these days due to recent development of the technology in treating infertility. twin pregnancies tend to cause more congenital anomalies than singleton pregnancies do. Especially when twin pregnancies are affected with one anomalous fetus combined to a normal one, the proper management and counseling are difficult. We experienced a twin pregnancy in which one anencephalic fetus was combined to a normal one, after close counseling we decided to continue the pregnancy. At 35 weeks 6 days of gestation, an anencephalic fetus was dead, so we delivered by cesarean section due to breech-cephalic presentation. The birth weight of the normal and anencephalic fetuses were 2160 gm and 600 gm, respectively. The anencephalic fetus was combined with scoliosis, absent left upper limb, and nuchal skin defect, but the healthy one showed good crying and movement and its Apgar score was 8 in 1 minute and 9 in 5 minute. Although the infant needed intensive care for 21days in the nursery room, she was finally discharged in good condition. We present this case with a brief review of the literature.