Why does gastric cancer cause black stools?

Gastric cancer has seriously threatened the lives of many patients, and the incidence of this disease has been increasing in recent years, so everyone must pay attention to it. Upper gastrointestinal bleeding caused by gastric cancer is mainly manifested by symptoms such as vomiting blood and black stools. The following is a relevant analysis of gastric cancer.

Upper gastrointestinal bleeding in gastric cancer is a common complication of gastric cancer, but its occurrence is different from other complications. It often occurs in the early stage. Therefore, upper gastrointestinal bleeding in gastric cancer is a sign of gastric cancer in some patients. When there is upper gastrointestinal bleeding, you must go to the hospital for a clear diagnosis and active treatment. In addition to direct naked eye observation of the surface of the gastric mucosa, gastroscopy can also perform gastric mucosal pathological biopsy at the same time to determine the cause of upper gastrointestinal bleeding and early detection of gastric cancer.

Upper gastrointestinal bleeding in gastric cancer mainly manifests as vomiting blood and black stools. If the amount of bleeding is large and urgent, it may manifest as a large amount of vomiting blood and black stools. In severe cases, it can cause shock or even death, and it is easy to diagnose; if the amount of bleeding is small and slow, vomiting blood generally does not occur, but it manifests as black stools or positive occult blood tests in the stool. At this time, it is most likely to be ignored by patients and their families because there is no vomiting blood. If the course of the disease is long enough, serious consequences such as anemia may occur. Before bleeding, most patients are accompanied by nausea, upper abdominal discomfort or pain. Patients with large amounts of bleeding may experience dizziness, blurred vision, cold sweats, general fatigue, pale complexion, weak and rapid pulse, and decreased blood pressure.

For middle-aged and elderly people with upper gastrointestinal bleeding and older age, especially those with chronic anemia, they should be alert to the possibility of gastric cancer. Gastric cancer generally has no specific symptoms in the early stages, so special attention should be paid to the fact that chronic gastrointestinal bleeding may be an alarm signal for gastric cancer. So be alert to hidden bleeding in the elderly. Before gastric cancer bleeding, there is often loss of appetite and weight loss, anemia is not commensurate with the degree of bleeding, and upper abdominal pain does not ease after bleeding, and sometimes it worsens. Gastric cancer is often accompanied by chronic, small amounts of bleeding, but when cancerous tissue erodes or ulcers erode blood vessels, it can cause heavy bleeding. If a mass is felt in the upper abdomen, and the left supraclavicular fossa and perirectal lymph nodes are enlarged, gastric cancer is already in the late stage.

Through the above analysis, we should have a preliminary understanding of the diagnosis of gastric cancer, but we should still be cautious about the disease. Therefore, when the patient has a problem, he must go to a regular hospital for a special examination, and then take targeted treatment methods under the guidance of a doctor.