Cancer that begins in the colon is called colon cancer and cancer that begins in the rectum is called rectal cancer. Cancer effecting either of these organs is also known as colorectal cancer. The colon and rectum make up the large intestine or lower part of the digestive system. The colon is the first six feet of the large intestine and the rectum is the last eight to ten inches. The job of the colon and rectum is to remove nutrients from food and store waste until it passes out of the body.
Colorectal cancer is preventable in many cases.
Screening tests can detect polyps, tiny growths that can become cancerous. Removing these growths before they become cancerous can prevent colorectal cancer. Screening tests can also help to detect cancer early, expanding treatment options and making treatment more effective. Both men and women are at risk for colorectal cancer. Those with a family history of colorectal cancer or polyps may be at greater risk for developing the disease.