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Use of a flow diverter in a small-caliber end artery anterior choroidal dissecting pseudoaneurysm: illustrative case

Griffin Ernst, Noor A. Mahmoud, Audrey Grossen, and Andrew Bauer

Anterior choroidal artery (AChA) aneurysms account for 3%–5% of intracranial aneurysms, with the majority arising proximally at the junction with the supraclinoid internal carotid artery (ICA). 1 , 2 Distal AChA aneurysms, those that arise from the cisternal segment of the AChA, are exceedingly rare, with only a few cases reported. 2 The AChA originates from the C7 segment of the ICA and supplies eloquent structures, including the posterior limb of the internal capsule, optic tract, basal ganglia, uncus, fimbria of the fornix, hippocampal head, amygdala