단일 융모막 쌍태아에서 한쪽 태아의 터너 증후군 증례 보고 = A Case Report of Heterokaryotypic Monochorionic Twin Pregnancy with Discordant for Turner Syndrome

다국어 초록 (Multilingual Abstract)

Monochorionic twins with discordant karyotypes are rare and mostly caused by post-zygotic mitotic nondisjunction. A 32 year old nulliparous woman at 11 weeks of gestation with spontaneous twin pregnancy wasreferred to our hospital. An amniocentesis was performed in both amniotic sacs at 15 weeks of pregnancy. Onefetus in monochorionic twin pregnancy was diagnosed with Turner syndrome with cystic hygroma, and theother fetus was normal. Because of high mortality rate in abnormal fetuses, the umbilical cord coagulation wasperformed using radiofrequency ablation to prevent the damage of co-twin that may be caused by the demiseof one fetus. After delivery, chorionicity of placenta was ascertained by pathologic exam. Postnatal findings ofphysical exam, abdominal and brain sonography were normal in the surviving neonate.