Intermediary injury

Last revised by Rohit Sharma on 20 Sep 2020

Intermediary injuries or intermediary contusions affect the basal ganglia and/or thalami and are uncommon manifestations of diffuse axonal injury associated with a poor prognosis.

The term is not widely used and they are known as intermediary because they occur between coup and contrecoup locations. 

They are a shearing injury of the lenticulostriate arteries and result in hemorrhagic contusions, which are often bilateral.

  • hyperdense hemorrhagic contusions of the lentiform nucleus and/or thalami
  • often bilateral

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