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Cystic adventitial degeneration of the common femoral artery
Insights
Cystic adventitial degeneration (CAD) is a rare arterial condition. This case highlights CAD of the common femoral artery presenting as an aneurysm, a unique clinical presentation.
Area of Science:
- Vascular Surgery
- Medical Case Reports
Background:
- Cystic adventitial degeneration (CAD) is an uncommon arterial disease.
- It typically affects the popliteal artery and presents as intermittent claudication, predominantly in men.
Observation:
- An unusual case of CAD involved the common femoral artery.
- The condition mimicked an aneurysm clinically, despite a normal arteriogram.
- The affected segment measured 5 cm, involving half the artery's circumference.
Findings:
- Surgical resection and saphenous vein graft replacement were performed.
- The cyst contained mucoid fluid and a fibrous wall lacking a cyst lining.
- This represents the eighth reported case of CAD in a proximal large lower extremity artery.
Implications:
- This case expands the known clinical presentations of CAD.
- It suggests CAD should be considered in the differential diagnosis of femoral artery aneurysms.
- The etiology remains uncertain, with theories pointing to primitive mesenchymal origins.
Abstract:
Cystic adventitial degeneration (CAD) of the arteries is an uncommon cause of intermittent claudication in adults. The majority of reported cases have involved the popliteal artery and have occurred predominantly in men, and all had clinical evidence of occlusive vascular disease. An unusual example of CAD of the common femoral artery masqueraded clinically as an aneurysm, but the arteriogram was normal. It involved 5 cm of the artery and half its circumference, and was resected and replaced with a saphenous vein graft. The cyst contained clear mucoid fluid and a fibrous wall without a cyst lining. This is the eighth case reported of CAD involving the proximal segment of a large lower extremity artery. The etiology is unknown, but many authors think such cysts arise from primitive "arthrogenic" mesenchyme in the adventitia of blood vessels.