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Journal of the Korean Society of Neonatology 1999;6(2):242-248.
Published online January 1, 2001.
Two Cases of Prenatally Diagnosed Acardiac Twin.
Young Joon Ahn, Eun Young Kim, Young Il Rho, Sang Kee Park, Chang Hoon Song, Sung Chul Lim
1Department of Pediatrics, College of Medicine, Chosun University.
2Department of Obstetrics and Gynecology, College of Medicine, Chosun University.
3Department of Anatomical pathology, College of Medicine, Chosun University.
Acardiac twin is a rare complication of multifetal gestation occurring in 1% of monozygotic twin pregnancies and 1 of 35,000 pregnancies. Acardia shows various other defects in addition to the absence of heart and the most common form is the acardius, acephalus, in which there is an absence of the fetal head and thoracic organs. The presence of an acardiac twin requires the normal (or "pump") twin to provide circulation for itself, as well as the acardiac (or "perfused") sibling. The mortality is 100% for the acardiac or perfused twin and for pump twin is about 50%, resulting from heart failure, prematurity, or cord entanglement. We report two cases of acardiac anomalies at 32 weeks gestation in 30 year-old primigravida woman and 26 weeks gestation in 30 year-old multigravida. A brief review of the literature is included.
Key Words: Acardiac Twin


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