Dandy-Walker complex

  • Absent cerebellum and vermis
  • Large posterior fossa
  • Large CSF cyst in posterior fossa that compresses brainstem
  • Absent fourth ventricle
  • Lifting of torcula
  • Absent falx cerebelli
  • Elevated tentorium cerebelli 
  • Associated with usually severe cerebral malformations
  • Has poor prognosis
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Chang, Miles C., et al. “Sonographic detection of inferior vermian agenesis in Dandy-Walker malformations: prognostic implications.” Radiology 193.3 (1994): 765-770.

Laing, Faye C., et al. “Sonography of the fetal posterior fossa: false appearance of mega-cisterna magna and Dandy-Walker variant.” Radiology 192.1 (1994): 247-251.