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Anterior Cerebral Artery Infarction - Case 4

A 42 year-old man developed left lower extremity weakness 1 week after successful coiling of an anterior communicating artery aneurysm which had bled.

Outline the Infarction

Anterior Cerebral Artery Infarction. Axial CT scans. Note the hypodense area in the right medial frontal lobe in the distribution of the right anterior cerebral artery. As the lesion is more than 2-3 days old, it is seen as a hypodensity on CT scan. As the anterior cerebral artery supplies the medial frontal lobe, an infarct in this distribution predominantly results in weakness of the contralateral leg. In this case, vasospasm following the subarachnoid hemorrhage was the cause of this stroke.

Revised 11/29/06
Copyrighted 2006. David C Preston