What are the main manifestation symptoms of gastric cancer? What are the main symptoms of gastric cancer? The number of cancer deaths is only increasing, especially nowadays people’s life pressure is increasing and they don’t know much about the disease, so cancer is even more rampant. 1/4 of the causes of death in China are cancer, and about half of the deaths from malignant tumors of digestive system are caused by stomach cancer. What are the main symptoms of stomach cancer? The following are the symptoms of gastric cancer: 1. Loss of appetite: Many people feel they have little appetite at the early stage of gastric cancer and often show wasting and weakness, which are mostly the first symptoms of gastric cancer, accounting for about 40%. Many patients often restrict their diet automatically due to fullness and burping after a full meal and gradually lose weight, but many people often treat it as indigestion and delay treatment. Bleeding and black stool: early gastric cancer has this symptom accounting for 20%. Any elderly patient with no history of gastric disease should be alerted to the possibility of gastric cancer once black stool appears. 3.Stomach pain: In the early stage of stomach cancer, it only feels discomfort in the upper abdomen, or a feeling of swelling and heaviness, and sometimes a vague pain in the heart fossa, which is often mistaken for gastritis or ulcer disease, but in fact, it is not. This is one of the manifestations of stomach cancer, because it is like cancer of the gastric sinus, which often causes rhythmic pain due to the change of duodenal function and is more similar to ulcer disease, so it is often misdiagnosed. 4. Nausea and vomiting: In the early stage of stomach cancer, there may be only post-food fullness and nausea, which are often caused by tumor-induced gastrointestinal dysfunction, so when these conditions occur, you must go to hospital for detailed examination and not blindly self-diagnose.