60-year-old male. Smoker with peripheral arterial occlusive disease
and abdominal aortic aneurysm. High ESR.
Operative findings: noticeably thickened, white aneurismal wall.
Ureters party fused with adventitia.
- Smooth cut through wall of aneurysm (with obliteration of debranching
- Intima: ruptured atheroma, extending into hyaline fibre parts
of wall with inflammatory infiltrates
- The media is not distinguishable from the intima
- The original adventitia is only recognisable by remnant vasa vasorum,
nerves and adipocytes.
- The inflammatory infiltrates are dense and predominantly consist
of lymphocytes, partly follicular and accompanied by capillaries
with prominent endothelium.
- Next to these are a few dense lymphocytic infiltrates
This is a non-infectious inflammation.