Sherry Scovell, M.D. presents an overview of venous insufficiency and its effects on the lower extremity. She begins by reviewing venous anatomy of the lower extremity including deep and superficial veins. The CEAP classification system of venous disease is outlined and explained. Various venous diseases such as varicose veins, chronic venous insufficiency and DVT are discussed, along with proper diagnosis and management. The critical role of duplex ultrasound is emphasized.