diverticulitis

Colon cancers or more incisively called colorectal cancers are malignant neoplastic diseases of the colon, appendix, and rectum. The cancer usually results from a type of mushroom shaped polyps or growths, called adenomatous polyps, found within the colon. They are mostly benign but if left long enough without treatment can often develop into colorectal cancer. Cancer localised to the colon region is diagnosed by utilizing colonoscopy.
Individuals with a genetic history of colorectal cancer or even adenomatous polyps are more susceptible to the disease. So are people whose close relatives have a past history of what is called Hereditary Nonpolyposis Colorectal Cancer (HNPCC) which caused because of a genetic sensitivity towards a variety of cancers.