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Intraoperative view and DSA image of a sidewall aneurysm constructed obliquely to parent artery. The aneurysm remained patent on 30-day follow-up angiogram (A, C, arrow). Intraoperative view and DSA image of a sidewall aneurysm constructed conventionally perpendicular to the long axis of the parent vessel. The aneurysm was thrombosed 27 days after construction. (B, D, arrow).
