Incidence of venous reflux in patients with multiple sclerosis - a prospective study (2010)
This study was done in Slovakia. They had 40 MS patients and 40 healthy controls. They used ultrasound (no MR, no venography). They found 9 healthy controls with reflux and 34 MS patients with reflux. Conclusion: Venous reflux is significantly higher in patients with MS than in healthy controls...