Epidemiology varicose veins are extremely common prevalence studies vary but prevalence data vary however it is thought they are found in about 10 20 of men and 25 33 of women commissioning data showed that 30000 to 35000 surgical or endovenous interventions were performed for varicose veins or venous ulceration in the nhs in england in 2012. Van der velden sk biemans aa de maeseneer mg et al five year results of a randomized clinical trial of conventional surgery endovenous laser ablation and ultrasound guided foam sclerotherapy in patients with great saphenous varicose veins. Hemorrhoids are a type of varicose vein your veins have one way valves that help keep blood flowing toward your heart if the valves are weak or damaged blood can back up and pool in your veins this causes the veins to swell which can lead to varicose veins varicose veins are very common. Varicose veins are large raised swollen blood vessels that twist and turn they usually develop in the legs and can be seen through the skin spider veins are smaller red purple and blue . Michaels ja brazier je campbell wb macintyre jb palfreyman sj ratcliffe j randomized clinical trial comparing surgery with conservative treatment for uncomplicated varicose veins cost effectiveness analysis of surgery versus conservative treatment for uncomplicated varicose veins in a randomized clinical trial british journal of surgery
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