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Imaging for Case 9: A. Head CT shows SAH concentrated in the left carotid cistern. B, C. Head CTA and DSA show BBA in the left internal carotid artery supraclinoid segment. D, E. Surgical clipping of the BBA with blood clots around the fragile BBA. F. Follow-up CTA after clipping shows no relapse of the aneurysm and 50% stenosis of the parent artery.
