Colon cancer is a type of cancer that originates in the inner lining of the large bowel which is the last part of digestive system.
Abnormal growth of cells in the inner lining of the bowel can form cluster of cells called polyps, which can either be benign (noncancerous) or malignant (cancerous). Colon cancer is also known as colorectal cancer as it can either originate from the colon (large bowel) or the rectum. The treatment for colon cancer will also depend on its origin.
Although it can happen at any age, colon cancer is more common in older people, as well as people with family history or inherited genetic syndrome (i.e. familial adenomatous polyposis (FAP) or Lynch syndrome), and people with medical conditions such as inflammatory bowel disease (i.e. Crohn’s disease or ulcerative colitis).