The stomach is located around the midway point of the digestive tract, with the mouth, throat and esophagus above it and the small intestines, colon and anus below it. This is why stomach cancer shares many risk factors with other organs of the digestive tract, especially diet, alcohol, tobacco and obesity.
According to the American Cancer Society, 27,600 new cases of stomach cancer will be diagnosed in 2020. But the numbers of new cases and stomach cancer deaths have decline dramatically since the early 1990s.
Learn more about the stages of stomach cancerTypes of stomach cancer
Almost all stomach cancers are adenocarcinomas of the stomach. These types of tumors are common in many cancers, including breast, colorectal and prostate. Stomach adenocarcinomas form in glandular cells in the innermost lining of the stomach. Other types of stomach cancers include:
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