Abstract
SUMMARY Colon cancer is the third most common cancer worldwide. Sigmoidoscopy and colonoscopy, with the removal of rectal and colon polyps, are proven strategies for the prevention of colon cancer, and testing for fecal occult blood helps to identify subjects suitable for endoscopy. Evidence that low-dose aspirin is associated with a substantial reduction in colon cancer risk and reduces the number and growth of colon polyps is accumulating from randomized trials and observational studies. Advantages and disadvantages of endoscopy and aspirin prophylaxis are discussed extensively in this review. The reduction in cancer incidence by the two approaches together is considerably enhanced as they complement each other. Expenditure could become more cost effective if the two were promoted together.
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