How Adenocarcinoma Starts
Your glands make fluids that your body needs to stay moist and work well. You get adenocarcinoma when cells in the glands that line your organs grow out of control. They may spread to other places and harm healthy tissue.
Adenocarcinoma can start in your:
Colon and rectum. The colon, which is also called your "large intestine," is part of your digestive system. It's a long tube that helps remove water andnutrients from the food you eat.
Adenocarcinoma is the most common type of colon cancer. It starts out as a small polyp, or growth, that's usually harmless at first but can turn intocancer.