Colon cancer, or colorectal cancer, originates from polyps (growths) in the inner lining of the colon. If not addressed, it can metastasize to other parts of the body. The colon, also known as the large intestine, is responsible for extracting water and salt from solid waste. The majority of colon cancers are adenocarcinomas, which arise from the glands that line the colon's interior. Depending on its starting point, the cancer may be referred to as either colon or rectal cancer.