Colon polyps and cancer
Colon cancer (also referred to as colorectal cancer) includes cancers of the colon (large intestine), rectum, appendix and anus. Most colorectal cancers develop first as polypssmall growths inside the colon or rectum that can become cancerous tumors over time. If the cells of a tumor spread to the intestinal wall and other areas, a malignant tumor can develop.
Each year, there are nearly 150,000 new cases of colorectal cancer diagnosed in the United States. It is the second leading cause of cancer deaths among men and women combined, second only to lung cancer.