Occasional mucus&constipation. i was worried about colon cancer.dr said she won't beable to order stool test because of age/history. colonoscopy is risky but it's up to me if i want one. she did do rectal exam. she never felt any masses. how accurate?

Unless you have family history of early onset colon cancer your are unlikely to have one. For constipation - You may take a fiber laxative like Metamucil and drink enough water daily so that your urine is colorless. For the long term you may try to increase your intake of fiber foods. Consult this site for fiber foods. http://www.mayoclinic.org/healthy-lifestyle/nutrition-and-healthy-eating/in-dep

Try exercise, adequate water intake, fiber in diet and OTC psyllium for some time. If not better pl see a GI doc.