Abstract: Objective Comparison of clinicopathological features and prognosis of remnant gastric cancer and gastric cancer recurrence.
Methods 62 patients with gastric cancer who had undergone major gastrectomy from January 2009 to January 2019 in our hospital were selected as the research object，they are divided into gastric cancer group (80 cases) and gastric cancer recurrence group (82 cases).Retrospective analysis of clinicopathological characteristics and prognosis data of two groups of patients.
Results The tumor size，pathological stage，degree of tissue differentiation，distant metastasis and other pathological characteristics of patients with gastric cancer group were significantly better than those with gastric cancer（P＜0.05）.Cox regression analysis was performed，and the results showed that pathological stage，degree of tissue differentiation，and distant metastasis were independent factors affecting the prognosis of patients with residual gastric cancer and gastric cancer recurrence（P＜0.05）.The overall survival time of patients with residual gastric cancer is (43.92±4.33) months，and the overall survival time of patients with recurrent gastric cancer is (25.48±3.71) months.the difference between the two groups is statistically significant（P＜0.05）.
Conclusion The clinical and pathological characteristics of residual gastric cancer are better than those of gastric cancer recurrence，and the survival time of patients with residual gastric cancer is significantly longer than that of patients with gastric cancer recurrence，and the prognosis is better.

Key words: residual gastric cancer, recurrence, expression, pathological features, prognosis