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Katz' classification of aortic atherosclerosis.
| Grade atherosclerosis | Aspect | Clinical impact |
|---|---|---|
| 1 | Normal appearing aorta | Normal |
| 2 | Extensive intimal thickening | |
|
| ||
| 3 | Atheroma protruding < 5 mm | Diseased |
| 4 | Atheroma protruding > 5 mm | |
| 5 | Mobile atheroma | |
