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Endovascular surgical treatment in cases with good collateral circulation (clinical case 2). (A) A false aneurysm in the area of the cavernous segment of the right ICA (indicated by the blue arrow), (B) cerebral angiography of the left ICA demonstrating good collateral blood flow to the contralateral side, and (C) occlusion of a defect in the right ICA using two balloons (indicated by red arrows).
