Ultrasound-guided sclerotherapy is an office-based minimally-invasive procedure used to chemically ablate superficial varicose veins remaining after endovenous laser ablation as part of a Continuum of Therapy approach at Hogue Vein Institute. With ultrasound guidance, a sclerosing or chemical agent, either sodium tetradecyl sulfate (STS) or polidocanol (POL), is precisely injected into veins targeted for chemical ablation, usually as a foam, to shrink and collapse them. The advantages of ultrasound-guided sclerotherapy include no scarring, effective shrinkage and collapse of chemically ablated varicose veins, and a powerful adjunctive tool for eliminating residual collateral varicose veins remaining after endovenous laser ablation. Complications are minimal in the hands of an experienced Vein Specialist.