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Introduction Aortic aneurysm is defined as a localized dilation of the aorta that is at least 50% greater than that of nondiseased adjacent aorta. In the distal aorta, namely the descending thoracic and thoracoabdominal aorta, most aneurysms form as a…
See Video 26.1 on ExpertConsult.com . Step 1 Surgical Anatomy ◆ Thoracoabdominal aortic aneurysms (TAAAs) are characterized by dilation of the aorta (to at least 1.5 times its normal diameter) at the diaphragmatic hiatus—the boundary that separates the descending thoracic…