Pulmonary hypertension – this brings about blood stream not being able to return back again to the center as conveniently, creating a retrograde force within the venous process. Pelvic Vein Stenting: If pelvic vein compression syndrome is the cause of your leg swelling, balloon angioplasty and stenting from the influenced vein https://sgvasculargrp.com/medical-condition/lymphoedema/