The common late-stage symptoms of gastric cancer patients include nausea, vomiting, and even a complete inability to eat. There are also symptoms related to the digestive tract such as pain in the upper abdomen and acid reflux, as well as upper gastrointestinal bleeding, such as vomiting blood and melena which are signs of lower gastrointestinal bleeding. Late-stage gastric cancer patients may also experience organ metastasis, leading to corresponding symptoms. For example, metastasis of gastric cancer to the liver can cause abdominal pain and ascites due to hepatic metastatic tumors. Clinical manifestations caused by such metastatic tumors also include metastasis to retroperitoneal lymph nodes in the abdominal cavity, a common site of spread for gastric cancer. Patients may even show symptoms of intestinal obstruction, such as abdominal pain, bloating, nausea, vomiting, inability to pass stool, or even absence of flatus, which are indicators of intestinal obstruction. Consequently, patients might experience weight loss and deteriorate into a cachectic state, marked by poor nutrition and significant weight loss, which are characteristic symptoms of late-stage patients.