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
- weight loss,
- abdominal pain or cramps,
- a mass or lump in the abdomen, and
- blood in the stool.
Other symptoms and signs can include
Causes of cancer of the small intestine
The cause of small intestine cancer is unknown.
Other small intestine cancer symptoms and signs
- Abdominal Cramping
- Abdominal Mass
- Abdominal Pain
- Black Stool
- Blood in the Stool
- Diarrhea
- Enlarged Lymph Nodes
- Intestinal Obstruction
- Intestinal Perforation
- Lump in the Abdomen
- Nausea
- Vomiting
- Weight Loss

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References
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/
Patient/page1>.
United States. National Cancer Institute. "Small Intestine Cancer Treatment." May 11, 2018. <http://www.cancer.gov/cancertopics/pdq/treatment/smallintestine/
Patient/page1>.