Only way: To know for sure is by colonoscopy. Another screening test is fecal occult blood testing. If you are not in a high risk group, screening colonoscopy is recommended at age 50 years. Consult your doctor which test is appropriate for you.
Answered 5/22/2013
5.1k views
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question