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Stomach cancer

95% of all stomach cancers are adenocarcinomas. The rest are distributed between lymphomas, gastrointestinal stromal tumors (GIST), and other more rare forms.

Adenocarcinomas are classified according to growth and spread patterns of intestinal, diffuse, and mixed types and graded by low-grade and high-grade malignancy. This applies primarily to the intestinal type since the diffuse type is by definition considered highly malignant, because of the missing ability to create node structures. 

The stomach consists of the cardia, fundus, corpus, antrum, and pylorus.


Compared to other cancers, stomach cancer is relatively rare. Approximately 0.9 percent of men and women will be diagnosed with stomach cancer at some point during their lifetime. Stomach cancer is most frequently diagnosed among people aged 65-74 and is more common in men than women.

In 2017, it is estimated to be 28,000 new cases of stomach cancer in the United States (13).


Age-specific incidence of stomach cancer, 2010–2014.

Source: National Cancer Institute. Bethesda, MD, USA



Incidence of cancer of stomach cancer, 1975–2014.

Source: National Cancer Institute. Bethesda, MD, USA


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