Chronic occlusion of the superficial femoral artery

This is a case of a 71-year old male patient reporting pain in the right leg when walking (short distance claudication).

The ultrasound assessment detected a segmental occlusion of the mid superficial femoral artery. The occlusion was defined chronic based on clinical presentation, presence of collaterals and ultrasound features of thrombus. Collateral vessels serve as a natural bypass system and may reduce leg symptoms in people with lower extremity arterial disease (LEAD).

Occlusion of a major lower extremity artery is a primary stimulus to the enlargement of pre-existing collateral vessels. However, these collateral vessels typically do not restore lower extremity perfusion to normal.

TAKE HOME MESSAGE: ultrasound, alongside with clinical presentation, can help in confirming the clinical suspect and in characterising the occlusive disease of the peripheral arteries.

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