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Anterior Communicating Artery Aneurysm - Case 2

A 55 year-old man developed the lightening onset of an explosive headache followed by nausea and vomiting.

Show the Prominent Subaranchoid Blood Anteriorly          Show the Intraventricular Blood

Axial CT Scans without contrast: Note the bright areas which signify blood. Most of the blood is in the interhemispheric fissure in the low frontal area. This is the typical location of bleeding from an anterior communicating artery aneurysm. Cerebral angiography is always needed to identify an aneurysm location, but in some cases, the location of the blood can help localize the bleeding. 

Revised 05/01/06.
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