Ataxic hemiparesis and hemiageusia from an isolated post-traumatic midbrain lesion
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Closed-head injury frequently involves the dorsolateral aspects of the rostral brainstem. This area of the brain is uniquely vulnerable to injury from rotationally induced sheer forces. Patients who suffer such injuries usually have diffuse axonal injury to other areas of the brain. [1] This is a case report of a patient with an isolated midbrain lesion secondary to a motor vehicle accident (MVA) who developed ataxic hemiparesis and ipsilateral hemiageusia.
Case report.
The patient was a 22-year-old right-handed white man who was in excellent health until he was involved in an MVA 1 month before being seen in the Neurology clinic. In the accident, he suffered a closed-head injury with loss of consciousness, as well as a minor injury to his right knee. Evaluation at another hospital included a brain MRI done 15 days after the MVA that demonstrated a small left frontal subacute subdural hematoma and a focal contusion of the splenium of the corpus callosum. When the patient presented …
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