Ascending transtentorial herniation

Last revised by Marianne Cossens on 13 Oct 2019

Ascending transtentorial herniation is a situation where space-occupying lesions in the posterior cranial fossa cause superior displacement of superior parts of the cerebellum through the tentorial notch. 

Clinical presentation

  • nausea and/or vomiting 
  • rapid progression toward a decreased level of consciousness and, eventually, death

Radiographic features

General imaging features include:

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