Dandy-Walker variant

• Vermian hypoplasia
• Cerebellar hemispheres fairly preserved
• Large posterior fossa
• Large CSF cyst in posterior fossa without any brain stem compression
• Fourth ventricle is present
• Mild lifting of torcula

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Estroff, J. A., M. R. Scott, and B. R. Benacerraf. “Dandy-Walker variant: prenatal sonographic features and clinical outcome.” Radiology 185.3 (1992): 755-758.

Wilson, Murray E., et al. “US case of the day. Dandy-Walker variant with agenesis of the corpus callosum.” Radiographics 14.3 (1994): 678-681.