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Patient 52F with left distal posterior inferior cerebellar artery (PICA) branch aneurysm. (a) Magnified superselective angiogram of left PICA from Echelon-10 demonstrating aneurysm. Arrow indicates 90° turn into aneurysm. (b) Coil deployment via Marathon – note the lack of proximal marker. (c) Magnified superselective angiogram of aneurysm (arrow) post-coil embolization. (d) Six-week follow-up angiogram demonstrating continued aneurysm occlusion and patency of PICA.
