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Diffuse axonal injury in a 20-year-old man after motor vehicle accident.
A, T2-weighted image shows hyperintense lesions in the splenium of the corpus callosum and left frontal gray matter–white matter junction (arrows).
B and C, DW images show these lesions as hyperintense with decreased ADC; they represent cytotoxic edema presumably due to the leakage of glutamate from the axon.
