Need more info
In order to be able to comment on prognosis, it's important to have some more information.
What type of cancer
(adenocarcinoma versus neuroendocrine)? Where within the small bowel
is it located? Has it spread to other organs? Can it be removed completely with an operation? Small tumors that have not spread often have a good prognosis, but talk to your doctor to find out about your case.