A rare presentation of bilateral spontaneous superficial femoral arteriovenous fistulas

Spontaneous arteriovenous fistulas are a rare clinical entity with very few cases reported in the literature. Prompt diagnosis and treatment is crucial and can prevent further complications in such patients. We report a case of a patient who presented with progressive bilateral claudication, discolouration of feet, hypaesthesia and non-healing ulcers. The patient had no history of trauma, aneurysm or surgery. After abnormal non-invasive studies, a peripheral angiogram revealed significant disease and obstruction of bilateral superficial femoral arteries. Spontaneous bilateral femoral arteriovenous fistulas were also found incidentally. After discussing the risks and benefits of multiple treatment options with the patient, percutaneous intervention with orbital atherectomy, balloon angioplasty and covered stent placements were performed. This treatment improved the patient's symptoms significantly.

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