[Foam sclerotherapy to treat varicose veins].

The ultrasound-guided foam sclerotherapy (UGFS) involves the injection of a sclerosing agent into a target vein under ultrasonographic guidance. The goal of this treatment is to harm the venous endothelium to achieve the destruction of the vein wall by a fibrosis phenomenon. In this article, we discuss indications and contraindications of UGFS. We also describe the technique, its efficacy and its complications.