The information on this page was reviewed and approved by
Maurie Markman, MD, President, Medicine & Science at CTCA.
This page was updated on November 05, 2020.
As with most cancers, intestinal cancer develops when defective or mutated cells grow out of control and form a tumor. Intestinal cancer, also called small intestine cancer or small bowel cancer, usually starts in the lining of the small intestine and may spread to other parts of the body. Most cases of intestinal cancer develop in the duodenum, or upper part of the organ.
The main types of small intestine cancer include: