FAP intially demands surgical removal of the large intestine. After this surgery, FAP patients have a significantly increased chance of developing desmoid tumors. Gardner's Syndrome is a genetic disorder. The gene responsible for FAP is a gene that is supposed to allow the body to control cell growth. In FAP patients, this gene has been altered and prevents the body from suppressing certain excess growth.
Desmoid tumors are growths that are made up of tissue similar to scar tissue.
So desmoids are associated with post-surgical discussions for FAP patients. For others, this may have nothing to do with surgery. There could be an entire website just on desmoid disease, regardless of FAP, and regardless of any post-surgical condition.