Colon and rectal cancer
Cancer is the uncontrolled growth of abnormal cells. Cancer that begins in the colon is called colon cancer, and cancer that begins in the rectum is called rectal cancer. Cancer that starts in either of these organs may also be called colorectal cancer. The colon and the rectum are parts of the large intestine, which is part of the body's digestive system.
Colorectal cancer is often found after symptoms appear, but most people with early colon or rectal cancer don't have symptoms of the disease. Symptoms usually only appear with more advanced disease.
Over 95% of colon and rectal cancers are adenocarcinomas. These are cancers that start in gland cells, such as the cells that line the inside of the colon and rectum. There are some other, more rare, types of tumors of the colon and rectum.
Take a look at the information we provide here about diagnosis, staging and treatment. When you're ready, click the button to make an appointment with one of our physicians. We know it's important that you get good information, and choose a treatment that's best for you.
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Visit the National Cancer Institute to read more about colon and rectal cancer.