Pelvic venous disorders are a group of disorders resulting in the formation of symptomatic varicose veins in the pelvis. Similar to varicose veins in the legs, these can be caused by faulty vein valves which allow blood to fall with gravity and pool in abnormal veins (reflux), or by blockages in the veins not allowing the blood to leave the pelvis (obstruction). This can happen in men or women, but is more commonly called varicocele in men.