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Middle Cerebral Artery Bifurcation Aneurysm - Case 1

A 26 year-old man developed the abrupt onset an explosive headache followed by nausea and vomiting. On exam, he was drowsy with subtle left sided weakness.

Show the Aneurysm          Show the MCA Anatomy

Cerebral angiogram, right internal artery injection. Note the aneurysm arising from the middle cerebral artery where it bifurcates into its superior and inferior divisions. This is one of the common locations for aneurysms.

Revised 05/01/06.
The Electronic Curriculum is copyrighted 1998,  Case Western Reserve University School of Medicine.