This is a CT scan of a 67 year old who is oriented but has been extremely sleepy and drowsy (sleeps almost 23 hrs a day). He is also dizzy and walks unsteadily. No certain gait, just needs someone to fully support him while walking. Neurological examination shows no significant findings.

This is the CT scan done 3 days after the onset of his condition. Is a cerebral ischemic event responsible, or should we look for another cause?

https://www.mediafire.com/?5tffxo3gt5566ye

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