is colon an organ
Colon Cancer Overview. The human colon, or large intestine, is a muscular, tube-shaped organ measuring about 4 feet long. It extends from the end of your small bowel to your anus. Typically the first or right portion of the colon which is called the ascending colon moves up from the lower right portion of the abdomen.
Cancer is the transformation of normal cells. The transformed cells grow and multiply abnormally. Left untreated, these cancers grow and eventually spread through the colon wall to involve the adjacent lymph nodes and organs. Ultimately, they spread to distant organs such as the liver, lungs, brain, and bones.