People with inflammatory bowel disease account for less than 2% of colon cancer cases yearly. Most deaths due to colon cancer are associated with metastatic disease. Cancer screening is recommended for cancers of breast, cervix, colon, and lung. Experimental studies also suggest mechanisms for bile acids in colon cancer. It is associated with a small increase in bladder and colon cancer. These four cancers are lung, breast, colon, and stomach cancers. Colon and pancreatic cancer did not have a response. Severe disease can lead to narrowing of the colon or rectum. Removal of the colon and rectum generally cures the condition. Bacteroides are implicated in the initiation of colitis and colon cancer. This is usually the stomach or part of the large intestine (colon) or jejunum. Field defects are important in progression to colon cancer. It regulates cell proliferation in colon carcinoma cells. CAD is available for detection of colorectal polyps in the colon in CT colonography. Colitis (inflammation of the colon) occurs commonly.