Leg varicose veins are mainly associated with unsightly blue-coloured thickened veins, occurring especially in the calf area. Thickened veins are not just a cosmetic defect. Above all, it is a sign of embolic-thrombotic disease, which is a very serious condition. In extreme cases, it can lead to death. It is therefore extremely important to prevent the formation of varicose veins and, in the event of their appearance, to remove the pathological changes as soon as possible.