Gastric cancer is a malignant tumor and is related to H. pylori infection and long-term inflammatory stimulation. The highest incidence of gastric cancer is in the sinus region, mainly because this region is often eroded by H. pylori and the gastric acid often damages the sinus, so the chance of cancer is higher, and the chance of cancer in the sinus region is about 50%. In addition to the sinus, the sinus near the lesser curvature, body and fundus of the stomach also has a higher chance of developing stomach cancer, while the chance of developing stomach cancer in the greater curvature of the stomach is relatively low. If you want to know whether you are suffering from stomach cancer, you can confirm the diagnosis by gastroscopy, and if necessary, you can extract biopsies for pathological examination to confirm the diagnosis. If stomach cancer is detected in early stage and surgery is performed as early as possible, the condition of most patients can be controlled.