Radiation therapy uses X-rays to destroy colorectal cancer cells. It is often combined with surgery or chemotherapy. Radiation therapy may also be used to reduce the cancer's size when it is blocking the colon or rectum or to relieve pain.
The decision to take the test for genetic colon cancer is personal. You may have emotional, financial, and family reasons for taking or not taking the test. You might choose to be tested because:You have received genetic counseling, understand the risks and benefits of testing, and feel that the benefits outweigh the risks. You have a personal history of more than 20 colon polyps, especially at a
You can have a blood test to look for the changed genes that cause colon cancer, although the test for HNPCC is not as widely available as the test for FAP. A positive result means that you may have one of the changed genes that causes FAP or HNPCC. It also means that your chances of getting colon cancer are very high. A negative result means that no such gene could be found in your blood sample.
Colon cancer genetic testing can tell you whether you carry a rare changed, or mutated, gene that can cause colon cancer. Although most people who get colon cancer do not have one of these mutated genes, having them greatly increases your chance of getting colon cancer. Colon cancer develops in the large intestine when cells change and grow out of control. Colon cancer is also called colorectal ..