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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.

Incidence

In 2013 there were registered 457 cases of stomach cancer in Norway, 298 were men and 159 were women. The number of stomach cancer cases in general is decreasing and it is essentially the intestinal type that is decreasing.

The average age is 75 years,

 

Age-specific incidence of stomach cancer, 2009–2013.

Source: Cancer Registry of Norway

 

 

Incidence of cancer of stomach cancer, 1954–2013.

Source: Cancer Registry of Norway

 

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