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Get answers to frequently asked questions about colorectal cancer

Colorectal Cancer FAQ

What is colorectal cancer?

Colorectal cancer is an abnormal and uncontrolled growth of cells in the colon or rectum. If left untreated, it can spread to other parts of the body.

What causes colorectal cancer?

The cause of most colon andrectal cancers is not known. Nearly 75% of colorectal cancers diagnoses happen in people without known risk factors.

Who is at risk for colorectal cancer?

There are some conditions that may increase a person's risk of developing colorectal cancer. Learn more

What are the symptoms of colorectal cancer?

People with polyps or colon or rectal cancer don't always have symptoms, especially at the early stages. When there are symptoms, they may include:

  • Blood in or on your stool (bowel movement)
  • Pains, aches, or cramps in your stomach that don't go away
  • Losing weight without know why
  • Change in bowel habits (constipation or diarrhea)

Is there anything I can do to reduce my risk for colorectal cancer?

Having regular screening tests for colorectal cancer beginning at age 50 helps increase the chance of finding the disease at an earlier stage. Also, studies have shown that increased physical activity and maintaining a healthy weight can decrease the risk for colorectal cancer.

Should I get screened for colorectal cancer?

Screening for colon and rectal cancer can help save lives. Colorectal cancers almost always develop from precancerous polyps. Screening tests can find polyps which can be removed before they turn cancerous. Screening tests can also find colorectal cancer early, when treatment works best and the chance for a full recovery is very high.

How is colorectal cancer treated?

There are many treatment options for colorectal cancer depending on the stage it’s in. Surgery, radiation, chemotherapy and immunotherapy are some of the options used.

What does staging for colorectal cancer mean?

When someone is diagnosed with colorectal cancer, doctors need to find how advanced the disease is, or how far it has spread. This is known as staging. Staging gives doctors the information they need to develop a treatment plan.

Are there clinical trials for colorectal cancer?

Clinical trials are key to finding new treatments for colorectal cancer. Clinical trials test the safety and effectiveness of new drugs or medical procedure and they help doctors determine if existing treatments can be used in different ways or for other diseases.

Watch videos about colorectal cancer and its treatment

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US.XON.10.04.022 Last Update: May 2010