Stomach cancer symptoms often do not occur early in the cancer process, making it hard to diagnose early. By the time stomach cancer symptoms appear, the cancer may have spread to other areas.
Early stomach cancer symptoms may include heartburn, abdominal pain, and microscopic internal bleeding. Additional stomach cancer symptoms include discomfort in the upper and middle abdomen, vomiting blood, weakness, and fatigue, although having these symptoms do not necessarily indicate stomach cancer.
An upper endoscopy, chromoendoscopy, or stomach X-rays can be performed to diagnose stomach cancer.
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