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Fetal Diagn Ther. 2004 Jul-Aug;19(4):342-7.

Dandy-Walker malformation: a review of 78 cases diagnosed by prenatal sonography.

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  • 1Department of Obstetrics and Gynecology, University of Istanbul, Faculty of Medicine, Istanbul, Turkey.



The purpose of this study was to determine the associated abnormalities and clinical outcomes of fetuses with Dandy-Walker malformations.


Sonograms and medical reports of 78 cases were reviewed and information regarding each outcome was collected from autopsy records, hospital charts and specialists caring for the surviving infants.


We identified 64 fetuses with classic Dandy-Walker malformation (DW) and 14 fetuses with Dandy-Walker variant (DWV). A high proportion (44.8%) of the parents were consanguineous. The spectrum and proportion of central nervous system (67.1 vs. 71.4%; p = 1.0) and other malformations (43.7 vs. 64.2%; p = 0.57) associated with DW and DWV were similar. Chromosome abnormalities were found in 9 of the 51 (17.6%) fetuses that underwent karyotype analysis. Only 4 of 64 (6.2%) DW and 3 of 14 (21.4%) DWV infants survived (p 0.14), and all surviving infants with DW or DWV had neurological disorders.


DW and DWV cases show so many similarities that a clear-cut distinction is difficult. There was no significant difference in the spectrum of associated anomalies and postnatal prognosis between DW and DWV cases.

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