Evaluation of the efficacy of polidocanol in the form of foam compared with liquid form in sclerotherapy of the greater saphenous vein: initial results.

Background: Foamed sclerosing agents have been used with enthusiasm by phlebologists for more than 5 decades. Any type of varicose veins can and has been treated with this technique. Numerous publications have stressed the advantages of foamed sclerosing agents on the basis of empiric and experimental criteria and have described various individual techniques to prepare foams.