In some cases, the patient will have symptoms but these symptoms are easily confused with common digestive problems. Therefore, stomach cancer is often not detected until the advanced stage, according to the health website Healthline (USA).
Persistent abdominal pain can be a warning sign of stomach cancer
Warning signs of stomach cancer that are often ignored include:
Indigestion, heartburn and persistent bloating
Indigestion, heartburn, and bloating are all very common digestive problems. However, if these symptoms persist and do not go away despite trying many methods, the cause could be a serious health problem, even stomach cancer.
Discomfort, dull pain in the abdomen
Dull, uncomfortable abdominal pain will usually go away soon and is not a cause for concern. In many cases, these symptoms are persistent, the pain level increases gradually, especially when accompanied by other digestive symptoms. People with this condition should see a gastroenterologist as soon as possible.
Nausea, vomiting
Nausea and vomiting are often caused by eating food that contains pathogens. If nausea and vomiting are repeated, it can be a potential warning sign of stomach cancer.
Loss of appetite
Another common symptom of stomach cancer is loss of appetite. The patient will feel full quickly even after eating only a small amount of food.
Unexplained weight loss
Losing weight after dieting and exercising is the goal of many people. However, sudden weight loss without a clear cause is often an alarming sign of serious health problems, including cancer of the stomach, esophagus, pancreas, liver, lung, rectum and some other types of cancer.
Black stool
Black stools are a warning sign of bleeding in the digestive tract. This is usually a serious symptom and requires immediate medical attention. However, in some cases, taking too many iron supplements, iron-rich foods such as animal blood, liver, kidney, or prunes, raisins, and dark chocolate can also cause black stools, according to Healthline.
Source: https://thanhnien.vn/6-trieu-chung-som-cua-ung-thu-da-day-thuong-bi-bo-qua-185250209002831999.htm
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