Eight-year survival after advanced gastric cancer treated with S-1 followed by surgery

Figure 4 Histopathological examination. A: Histopathological examination showed numerous poorly differentiated adenocarcinoma cells in the mucosa; B: There were only a small number of poorly differentiated adenocarcinoma cells, but severe fibrosis, in the submucosal layer; C: The only findings in the lymph nodes were remarkable fibrosis and giant cells, with no cancer cells seen.