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Dandy-Walker Malformation

KEY FACTS

Terminology

Classic Dandy-Walker malformation
- Cerebellar vermis is completely or partially absent
- Cystic dilatation of 4th ventricle (4V)
- Enlarged posterior fossa with elevated tentorium
  - –
    Tentorium is roof of posterior fossa and separates cerebellum from occipital lobe

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