The authors analyzed the results of surgical treatment 479 patients with pyloroduodenal ulcer (PDU). Of these, 381 (79.5%) made up main group (who underwent excision PDU pylorus–preserving duodenoplasty), and 98 (20.5%) – comparison group, i.e. control (underwent pylorus–destroying pyloroduodenoplasty). In long term after operations performed, 310 were studied pylorus–sparing PD 82 PDP destruct...