A male was brought unconscious to the hospital with external injuries. CT brain showed no midline shift, but basal cisterns were compressed with multiple small hemorrhages. What is the diagnosis
Correct Answer: Diffuse axonal injuries
Description: Ans. is 'd' i.e. Diffuse axonal injuries Diffuse axonal injury (DAI) and Cerebral contusions are the most common primary brain injuries in nonpenetrating trauma to head, comprising almost 95% primary injuries.Diffuse axonal injury(the most common primary brain injury), there is shearing injury of axons most commonly at the cortico- medullary junction, due to sudden acceleration/deacceleration or rotational forces on the brain.These shearing injuries tend to be diffuse & bilateralDAI is seen in cases of severe head injury and patient loses consciousness at the moment of impact.Cortical Contusionsare foci of hemorrhages, that occur because of brain hitting against the bony ridges of the skull and less often the dural fold.compared to DAI, cortical contusion are less frequently associated with initial loss of consciousness unless they are extensive.The above given pt. presents a picture of DAL He is unconscious. His CT shows multiple small hemorrhages. There is no midline shift as the injuries are diffuse & bilateral. Basal cisterns are compressed due to diffuse cerebral edema.
Category:
Radiology
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