When varicose veins appear at the root of the thigh, it is important to first identify the cause of the varicose veins. Because varicose veins at the root of the thigh are a special type of varicose veins, they may be caused by blockage of the inferior vena cava, or they may be caused by compression of the superficial veins resulting in dilated and tortuous superficial veins at the root of the thigh. The first step is to perform an angiogram of the veins above the root of the thigh to see which area is causing the blockage that is causing the superficial veins to dilate. Different treatments are taken for the targeted cause: for example, if the iliac vein is compressed, an iliac vein stent dilation procedure will be performed to be able to relieve the manifestation of the compressed iliac vein. In the case of inferior vena cava compression, balloon dilation is performed to open the blocked or narrowed inferior vena cava, which reduces the pressure in the vein and allows the varicose veins to recover completely. If the varicose veins are simply due to the root veins of the thighs and not due to other causes, the simplest ligation procedure can be performed on the varicose veins, which will eliminate them completely.