A relatively new procedure (RF approved by the FDA in 1999, LASER 2001) is endovenous closure. This procedure uses either radiofrequency energy or LASER energy delivered through a thin catheter to treat the underlying cause of the varicose veins. Performed with ultrasound guidance and under local anesthesia, this process is a gentler, minimally invasive approach to the treatment of the underlying insufficient veins causing the varicose veins or other presentation of venous insufficiency such as swelling, skin discoloration, bleeding or ulceration. Endovenous closure or ablation allows treatment of leaking veins by sealing them with heat, rather than stripping the veins out of the leg. With endovenous closure, there are no incisions, minimal to no pain, and minimal scarring.