We report our experiences with surgical repair of aneurysms of hemodialysis fistulas. After partial resection and suture of the aneurysm a perivascular metal mesh tubing (Biocompound Shunt) is applied to prevent the development of a new aneurysm. This method allows the use of the autologous vein for hemodialysis access for longer periods. In 6 patients treated in this way we found after a median period of 23 months a new dilatation of the vein of 10 up to 21 millimetres without stenosis, thrombosis or infection. All patients were satisfied with this type of surgery.