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Computed tomography (CT) lesion exemplars. a Small, isolated hemorrhagic lesions without associated mass effect or edema most consistent with traumatic axonal injury (TAI). b Larger petechial hemorrhagic lesion with associated edema consistent with brainstem contusion. c Larger, diffuse hemorrhage associated with trans-tentorial mass effect and dusky intervening nonhemorrhagic parenchyma consistent with Duret hemorrhage
