They're most common in the legs and ankles. They usually aren't serious. Sclerotherapy uses an injection of a special chemical (sclerosant) into a varicose vein to damage and scar the inside lining of ...

Transcatheter foam sclerotherapy (TCFS) occludes the gonadal vein via introduction of sodium tetradecyl sulfate foam, which causes local inflammation. The viscosity of this foam allows for precise ...