People with this tendency to develop colon cancer should be cared for at a center that provides surveillance screening.
Regardless of any surveillance examinations, you should see a doctor as soon as you develop symptoms in the gastrointestinal tract. They may involve blood or mucous in the stool, stool abnormalities such as diarrhea or constipation, flatulence, or pain. Even non-specific signs such as weight loss should be paid attention to and reported to a doctor so that he or she can check whether you have colon cancer.
You should also see a doctor right away if you notice any other newly occurring abnormalities or symptoms, such as difficulty swallowing, skin lesions, or (lower) abdominal pain.