Each year, US doctors diagnose about 1200 malignant small intestine tumors. This is a small number relative to the frequency of tumors in other parts of the GI tract.
There are several possible reasons for this:
- It has been proposed that the liquid nature of the small intestinal contents may be less irritating to the mucosa, the innermost lining of the small bowel.
- Rapid transit time in the small bowel may reduce exposure of the intestinal wall to cancer-inducing agents found in the intestinal contents.
Other factors exist as well. The link below features detailed information, as well as risk factors in the general population and diseases associated with this cancer.
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