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FIG 3. Patient with a left middle cerebral artery aneurysm. 3D-CTA (superior view) suggests strong adhesion (double black arrows) of an insular vein (white arrow) to the cerebral aneurysm (white arrowhead). In this case, a connecting vein (black arrow) between the BVR (double white arrows) and the SPS, SSVs (black arrowhead), and an aneurysmal bleb (*) are also revealed.
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