What is colon cancer?

Colorectal cancer is a cancer that starts in the colon or the rectum. These cancers can also be named colon cancer or rectal cancer, depending on where they start. Colon cancer and rectal cancer are often grouped together because they have many features in common. read more

WebMD explains the function of the colon and rectum and how colorectal cancer starts. read more

Colorectal cancer occurs in the colon or rectum. The term colorectal cancer is used to describe colon cancer, rectum cancer or both. As the graphic below shows, the colon is part of the large intestine or large bowel. The rectum is the passageway that connects the colon to the anus. read more

Colon cancer is cancer of the large intestine (colon), which is the final part of your digestive tract. Most cases of colon cancer begin as small, noncancerous (benign) clumps of cells called adenomatous polyps. Over time some of these polyps can become colon cancers. Polyps may be small and produce few, if any, symptoms. read more

Colorectal cancer occurs in the colon or rectum. The term colorectal cancer is used to describe colon cancer, rectum cancer or both. As the graphic below shows, the colon is part of the large intestine or large bowel. read more