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Doctor insights on: Dna Test For Colon Cancer

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Is there a DNA test to check for colon cancer?

Is there a DNA test to check for colon cancer?

Yes, BUT.: There are commercial tests available. They are not more effective than other methods of screening ( fecal occult blood and colonoscopy) and are not as cost effective. ...Read more

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Dr. Barry Rosen
4,223 doctors shared insights

Cancer (Definition)

Cancer is a group of diseases that is characterized by uncontrolled cell growth leading to invasion of surrounding tissues that spread to other parts of the body. Cancer can begin anywhere in the body and is usually related to one or more genetic mutations that allow normal cells to become malignant by interfering with internal cellular control mechanisms, such as programmed cell death or by preventing ...Read more


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Is a colonoscopy the only test for colon cancer? Can a fit test replace the colonoscopy? Is it painful to have a colonoscopy awake?

Is a colonoscopy the only test for colon cancer? Can a fit test replace the colonoscopy?  Is it painful to have a colonoscopy awake?

Colonoscopy: Every person (even asymptomatic) after age of 50 should undergo screening colonoscopy. If there is a family history of colon cancer screening should be done earlier. Awake? Why? I won't recommend to do it being awake might not be a pleasant experience. ...Read more

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How do they test for colon cancer? Not screening but diagnosing.

How do they test for colon cancer? Not screening but diagnosing.

Colonoscopy: A colonoscopy evaluates the whole colon directly and if a mass or lesion is identified, it can be removed or biopsied. If you could only have one test, that would probably be the one to choose. ...Read more

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What is msi test in colon cancer?

What is msi  test in colon cancer?

Screening tool: Msi test has a few uses in colorectal cancer screening and surveillance. While only 15 percent of colorectal cancers are msi positive, as many as 90 percent of patients with lynch syndrome (specific genetic etiology for colorectal cancer) have a positive msi test. The test may also be helpful in determining those patients with stage ii or iii cancer who may benefit from chemotherapy. ...Read more

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What is a fecal occult test in detecting colon cancer?

What is a fecal occult test in detecting colon cancer?

Test for blood in BM: The fobt tests for blood in the stool. Test is performed on spontaneously voided stool on three separate occasions. Presence of blood in any of the samples is a "positive" test. Blood may indicate cancer, hemorrhoids, blood vessel abnormality, local irritation or a host of other non life threatening things. However, blood in the stool is a finding that needs follow up with a more specific test. ...Read more

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If I have a parent who had colon cancer, what tests do I need to do and when?

If I have a parent who had colon cancer, what tests do I need to do and when?

A Colonoscopy: It would be a good idea to do a colonoscopy at the age 10 years younger than when your parent was diagnosed. If you parent was diagnosed over the age of 60 you should start at the age of 50. ...Read more

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Could use your help docs! my CEA test was a 3. Should I do something else? I had colon cancer in 1997?

Could use your help docs! my CEA test was a 3. Should I do something else? I had colon cancer in 1997?

First i would: Repeat the cea, if higher need to discuss with your oncologist or a colorectal surgeon or GI doctor to begin workup of recurrent colon cancer. Cea of 3 is not abnormal. You should have been getting colonoscopies regularly since your original diagnosis. Pet/ct scans may be necessary. But if cea is 3 on repeat i would not be concerned. Just stay on 5year colonoscopy schedule. ...Read more

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Why are most doctors so quick to write off colon cancer probability in a 21 year old? Most doctors wont test me for colon cancer why?

Why are most doctors so quick to write off colon cancer probability in a 21 year old? Most doctors wont test me for colon cancer why?

Too young: Unless you have bad genetic mutation and/or terrible luck, colon cancer is exceeding rare for a 21 year old. Screening colonoscopy has an unacceptable complication vs benefit ratio when performed on an asymptomatic, normal risk young person. ...Read more

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Dr. Eric Kaplan
923 doctors shared insights

Colon Cancer (Definition)

Final few yards of your intestine, between the terminal ileum (small bowell) and rectum. It squeezes water and solidifies waste to stool. It is subject to outpouching (divertics) polyps, and these can become cancers. The cells are abnormal, invade into the muscle and travel ...Read more


Dr. Neigatha Graney
1 doctor shared a insight

Colon (Definition)

The colon is another term for the large intestine. This is the final portion of the digestive system, responsible for absorbing water and storing stool before evacuation. It is divided into sections described as cecum; ascending, transverse, descending and ...Read more