There are different kinds of tumors that can arise in the small intestine, although cancer of this organ is far less common than colorectal cancer. Symptoms can be similar to those of any gastrointestinal malignancy and include
Other symptoms and signs can include
Causes of cancer of the small intestine
The cause of small intestine cancer is unknown.
Kasper, D.L., et al., eds. Harrison's Principles of Internal Medicine, 19th Ed. United States: McGraw-Hill Education, 2015.
United States. National Cancer Institute. "Small Intestine Cancer Treatment." May 11, 2018. <http://www.cancer.gov/cancertopics/pdq/treatment/smallintestine/