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Vertebrobasilar dolichoectasia in a 67-year-old man. A, Right and left ICA cerebral angiograms demonstrate normal-caliber internal carotid arteries, MCAs, and anterior cerebral arteries bilaterally. B, Left vertebral artery cerebral angiogram demonstrates an irregular dolichoectatic and fusiform aneurysm involving the entirety of the basilar artery.
