A simple, precise, and consistent anatomical terminology is necessary for evaluating and treating patients with varicose veins. A clear understanding of the anatomy is also very important to correctly diagnose and perform the best treatment for varicose veins. Because the anatomy depicted by ultrasonography has many variations, anatomic definition for at least some of the veins still require clarification. Studies focusing on different segments of the veins are needed to obtain detailed anatomical knowledge given this great variability.