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What is the prognosis for Dandy-Walker syndrome?

The effect of Dandy-Walker syndrome on intellectual development is variable, with some children having normal cognition and others never achieving normal intellectual development, even when the excess fluid buildup is treated early and correctly. Longevity depends on the severity of the syndrome and associated malformations. The presence of multiple congenital defects may shorten the life span.

This answer is based on source information from the National Institute of Neurological Disorders and Stroke.

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