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Figure 3: Scanned images of the ascending aorta, arch, left subclavian artery, descending thoracic aorta (elastic van Gieson), and abdominal aorta (Hematoxylin and Eosin, and elastic van Gieson) in a diffuse pattern of TA. All segments show marked adventitial fibrosis, the major cause of wall thickening. Lymph nodes (arrows) are seen around abdominal aorta

Figure 3: Scanned images of the ascending aorta, arch, left subclavian artery, descending thoracic aorta (elastic van Gieson), and abdominal aorta (Hematoxylin and Eosin, and elastic van Gieson) in a diffuse pattern of TA. All segments show marked adventitial fibrosis, the major cause of wall thickening. Lymph nodes (arrows) are seen around abdominal aorta