Orphanet: Isolated Dandy Walker malformation

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Isolated Dandy-Walker malformation

Disease definition

Dandy-Walker malformation (DWM) is the association of three signs: hydrocephalus, partial or complete absence of the cerebellar vermis, and posterior fossa cyst contiguous with the fourth ventricle, presenting early in life with hydrocephalus, bulging occiput and posterior fossa signs such as cranial nerve palsies, nystagmus and ataxia.


Classification level: Disorder
  • Synonym(s): -
  • Prevalence: 1-9 / 100 000
  • Inheritance: Multigenic/multifactorial 
  • Age of onset: Neonatal, Antenatal
  • ICD-10: Q03.1
  • OMIM: 220200
  • UMLS: C0010964
  • MeSH: -
  • GARD: 6242
  • MedDRA: -

Detailed information

Article for general public

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