Cardiovascular · UKMLA & AKT
Popliteal aneurysm
A free high-yield preview for the UKMLA Applied Knowledge Test. Below are the key points to recognise popliteal aneurysm — the full SA Note notes add investigations, management, complications and 10 practice questions.
Key high-yield points
- Most common peripheral aneurysm - ~70% of all peripheral arterial aneurysms
- Predominantly older men; bilateral in ~50% of cases
- Co-existing AAA in 30-40% - always image the aorta on diagnosis
- Aneurysmal when diameter >1.5-2.0 cm (>50% dilatation of normal vessel ~1.0-1.1 cm)
Popliteal aneurysms thrombose; aortic aneurysms rupture. Turbulent flow → mural thrombus → acute thrombosis or distal embolisation → limb loss.
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