The authors analysed the late-term results of treatment 5 and 8 years after selective proximal vagotomy (SPV) and after SPV with pyloroplasty. Each group contained 39 patients. It is shown that pyloroplasty had no significant effect on the frequency of post-vagotomy complications, though the lactase deficiency syndrome developed more frequently. The authors believe that SPV without pyloroplasty is the operation of choice in uncomplicated duodenal ulcer.