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Journal of Ultrasound in Medicine, Vol 4, Issue 10 519-524, Copyright © 1985 by American Institute of Ultrasound in Medicine

JOURNAL ARTICLE

Antenatal ultrasound findings in fetal triploidy syndrome

J. P. Crane, H. A. Beaver and S. W. Cheung

Although commonly encountered in spontaneous abortions, triploidy is rarely seen in fetuses surviving beyond mid-pregnancy. Mid-trimester sonographic findings in three triploid fetuses are described and compared with those reported in six prior cases. While sonographic characteristics are variable, common features include: 1) second trimester-onset fetal growth retardation with a reduced growth potential pattern of anthropometric growth, 2) body asymmetry with relative macrocephaly and an elevated head:abdominal circumference ratio, 3) hydrocephalus, 4) oligohydramnios, and 5) an abnormally large and/or hydropic placenta (in cases of paternal origin). Genetic amniocentesis and amniotic fluid chromosome studies should be performed when ultrasound findings suggestive of fetal triploidy are identified.




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Copyright © 1985 by the American Institute of Ultrasound in Medicine.