Endovascular Surgery for Inflammatory Abdominal Aortic Aneurysm with Contrast Allergy—Usefulness of Carbon Dioxide Angiography and Intravascular Ultrasound: A Case Report

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We report a patient with inflammatory abdominal aortic aneurysm who underwent endovascular aneurysm repair, despite his having an allergy to iodinated contrast medium and anatomy unsuitable for the procedure. Intravascular ultrasound-guided and CO₂-assisted aortic stent graft placement was performed, and the procedures resulted in the successful exclusion of the aneurysm with regression of the mantle sign and resolution of hydronephrosis.