Dandy-Walker syndrome is a congenital malformation affecting the cerebellum, an area in the back of the brain, and the fluid-filled spaces around it. One of the main features of this condition is a large fourth ventricle, where fluid flows between the spinal cord and the upper and lower parts of the brain. Some people also have an increase in pressure in the brain.

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1. Brain Abnormalities

Dandy-Walker syndrome includes other less common brain abnormalities as well, including absent or underdeveloped tissue connecting the right and left sides of the brain, a small protrusion of brain tissue through the back of the skull, or a cluster of nerve cells not migrating to their proper location during fetal development.

doctor examining MRI scans of patient's brain
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