Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Small Intestine Cancer ?
    ### Response:
    Key Points
                    - Small intestine cancer is a rare disease in which malignant (cancer) cells form in the tissues of the small intestine.    - There are five types of small intestine cancer.    - Diet and health history can affect the risk of developing small intestine cancer.
    