Colorectal Cancer: Classifications

The vast majority (over 95 percent) of these cancers are discovered in the inner lining of the colon and the rectum and are adenocarcinomas.
Cancer in the colon and rectal cancer have a similar origin, yet they may be treated somewhat differently. Surgery for colon cancer is relatively straightforward, yet it is harder to operate on the rectum that contains nerves related to sexual arousal and bladder function and is located in a narrow area of the pelvis. As a consequence, radiotherapy is often utilized to supplement surgery for rectal cancers.