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Histological evaluation of the aortic wall using the histological inflammation scale (HISA) of aneurysms (19).
| Aneurysm | No. | Inflammatory changes, n (%) | Atherosclerotic plaque, n (%) | Grade 0, n (%) | Grade 1, n (%) | Grade 2/3, n (%) |
|---|---|---|---|---|---|---|
| AAA | 24 | 24 (100) | 22 (91.2) | 0 (0) | 3 (12.5) | 21 (87.5) |
| Aorta control | 12 | 7 (58.3) | 4 (33.3) | 5 (41.7) | 7 (58.3) | 0 (0) |
