The colon is also called the large bowel or large intestine. It is the lower 150 to 180 cm of the digestive system. The last 20 to 25 cm of the colon is the rectum. Colon cancer, sometimes called colorectal cancer, is cancer that starts in the large intestine or rectum.
Cancer cells are abnormal cells. Cancer cells grow and divide more quickly than healthy cells. Some cancer cells may form growths called tumors. All tumors increase in size, but some tumors grow quickly, others slowly. Some cancer cells spread to other parts of the body through the blood and lymph systems.
If you have any questions, please speak to your treating physician.