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Chiari II malformation

Case contributed by Dr Frank Gaillard
Modality: MRI

Multiple findings including: 

  • partial agenesis of the corpus callosum - note the absence of the rostrum. 
  • very atrophic / gliotic low lying tonsils 
  • bowing of the clivus
  • small posterior fossa
  • tectal beaking

Case Discussion:

This patient also has spina bifeda, and the features are consistent with a Chiari II malformation. 

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