ConclusionsThis represents the largest Down syndrome population assessed for ARSA. In this series, the incidence of ARSA was 25%, lower than previously reported in much smaller series. Its presence did not correlate with the presence of any other marker or major anomaly, including heart defects. Copyright © 2012 ISUOG. Published by John Wiley & Sons, Ltd. (Source: Ultrasound in Obstetrics and Gynecology)

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