There are many methods of treatment, uniform for advanced clinical conditions. The most important are compression treatment and surgery. The use of compression garments regularly can help prevent or even stop the progression of the disease. Medical density stockings form the source of vein treatment. In disease progresses, the patient may develop thrombosis (blood clots) or even venous ulcers in the leg. If a blood clot breaks away from the venous wall and circulates through the venous system to the lung, a life-threatening situation is created, called pulmonary embolism.