Diffuse axonal injury

Discussion:

This case emphasizes how traumatic shearing injury to the brain (diffuse axonal injury) can be invisible on initial CT but is far more easily detected on MRI. The three typical sites of involvement which correlate with severity are shown in this case; the cortical grey-white interface (grade 1), the corpus callosum (grade 2) and brainstem/superior cerebellar peduncles (grade 3).  

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