Diffuse axonal injury:
Trauma that is strong enough to break long slender blood vessels is usually strong enough to break long delicate axons, too. Therefore, the presence of gross microhemorrhages in long white matter tracts, such as the corpus callosum, strongly suggests that diffuse axonal injury will be seen on microscopic evaluation of the axons comprising these white matter tracts.
The image shows the corpus callosum of a brain cut in the coronal plane that belonged to an adult involved in a motor vehicle accident.
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