Abstract
Pseudo-Kaposi's sarcoma or Stewart-Bluefarb subtype acroangiodermatitis is uncommon and is caused by arteriovenous fistula and malformation. We report a new case. A 33-year-old man presented with painful red-violet plaque on the dorsum of the toes with angiomatous nodules on the sole. Histological and immunohistochemical studies for CD34 were consistent with Kaposi's sarcoma. Doppler ultrasonography and femoral angiography showed multiple distal arteriovenous shunts. Free-flow embolisation with fragments of Ethibloc gelatin sponge was performed and arteriography, performed immediately afterwards, showed delayed venous drainage. The outcome was good with complete drainage of the angiomatous lesions. Pseudo-Kaposi's sarcoma Stewart-Bluefarb subtype begins early in life in male subjects, with unilateral skin lesions. It bears clinical and histological resemblance to Kaposi's sarcoma. Doppler ultrasonography and angiography show arteriovenous fistulas that classically develop at shunts, explaining the role of traumatism and high vascular pressure in the genesis of this disease.
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