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Korean Journal of Obstetrics & Gynecology 2008;51(7):766-770.
Published online July 1, 2008.
Two cases of complete chorioamniotic membrane separation.
Jeong Hui Hong, Yun Sook Kim, Jeong Hui Park, Seob Jeon, Seung Do Choi, Jae Gun Sunwoo, Dong Han Bae
Department of Obstetrics and Gynecology, University of Soonchunhyang, College of Medicine, Soonchunhyang University Chunan Hospital, Cheonan, Korea. drsook@schch.co.kr
Abstract
As chorion and amnion fusion usually occurs between 14 and 16 weeks of gestation, sonographic identification of chorion and amniotic membrane separation is a normal finding before 14 weeks. However, persistent separation after 16 weeks of gestation is considered rare and abnormal findings. Complete chorioamniotic membrane separation (CMS) may occur spontaneously, but has also been described as a complication of all invasive intrauterine procedures, including amniocentesis. Complete CMS have a significant morbidity and mortality due to intrauterine fetal death, cord complications, and preterm delivery. Aggressive treatment with hospitalization is necessary. We now report 2 cases of complete CMS identified by prenatal ultrasound; 1 in spontaneous complete CMS diagnosed at 24 weeks of gestation, and health premature child was born at 29+3 weeks of gestation, who was alive and well at present; 1 in complete CMS diagnosed at 21 weeks of gestation after amniocentesis, and fetal demise at 24 weeks of gestation due to cord strangulation by an amniotic band. We experienced two cases of complete CMS and report with a brief review of literatures.
Key Words: Complete chorioamniotic membrane separation, Amniocentesis, Intrauterine fetal death


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