Pseudoaneurysm complicating superficial temporal artery--middle cerebral artery bypass

A patient with transient ischemic attacks from occlusion of a left common carotid artery was treated with common carotid endarterectomy immediately followed by superficial temporal artery-middle cerebral artery bypass. Subsequent angiography demonstrated a pseudoaneurysm formation at the anastomotic site. To our knowledge, this is the first report of this complication occurring in a human being.