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A, Anteroposterior digital subtraction angiogram shows the aneurysm (arrow) before treatment. B, DSA image immediately after device deployment shows aneurysm partial occlusion (block arrow). C, DSA image at 1 month shows complete aneurysm occlusion (notched arrow). D, Photomicrograph stained with toluidine blue and basic fuchsin shows an empty aneurysm sac completely sealed with neointimal growth incorporating the FRED struts and mesh spanning the neck, magnification 15×.
