At its earliest stage (stage 0), colon cancer is limited to the inner lining of your colon. As colon cancer progresses, it can grow through your colon and extend to nearby structures. The most advanced stage of colon cancer (stage IV) indicates cancer has spread to other areas of the body, such as the liver or lungs.
The staging of colorectal cancer describes the extent of the disease: whether it is present only in the inside lining of the colon or rectum, has grown deeper into those tissues, or has spread to other parts of the body. The staging process usually begins with a biopsy. Shutterstock
According to the American Cancer Society, typically each stage of colon cancer is treated with the following: Stage 0: Surgery is often the only treatment needed for stage 0 colon cancer. Stage 1: Surgery alone is recommended for stage 1 colon cancer.