In four of five patients with gastric cancer who also had a chronic duodenal ulcer, the histologic type was “early gastric cancer,” which offers a better prognosis than the more common type. Patients with duodenal ulcer who develop gastric cancer may have a better prognosis than patients with gastric cancer without duodenal ulcer because their duodenal ulcer places them under more frequent surveillance, including clinical and endoscopic follow-up.