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Doctor insights on: What Is Cancer Marker

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What is the cancer marker lab test CEA something?

What is the cancer marker lab test CEA something?

Colon cancer marker: The cea (carcinoembryonic antigen) test is a colon cancer tumor marker. As with most tumor markers, it is not used as a screening test for colon cancer (in other words, it is not used to find the cancer because of a relatively high false positive rate) but it is used to monitor the cancer once it has been diagnosed. This is particularly useful for treated colon cancer to see if the tumor reoccurs. ...Read more

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Dr. Barry Rosen
4,214 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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How do doctors know to check for thyroid cancer? What symptoms are markers for it

How do doctors know to check for thyroid cancer? What symptoms are markers for it

A nodule: Hi. Presence of a thyroid nodule (a mass) prompts consideration of thyroid cancer (unless it's a hyperthyroid nodule...not a thyroid cancer risk). No nodule, no concern for thyroid cancer. Do you have have a nodule, or are you one of the "worried well"? Good luck! ...Read more

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My friend who has breast cancer gets her tumor markers checked, my mother also had breast cancer, what are the markers and could I get checked?

My friend who has breast cancer gets her tumor markers checked, my mother also had breast cancer, what are the markers and could I get checked?

Tumor "markers": ...Just don't work that well (outside of a few very specific tumors that don't include breast cancer), and should not be used to screen for cancer in someone without the disease. The odds are that any positive test would be a falsely positive. As far as what tumor markers are used for breast cancer, none are used routinely, and i'd ask your friend what the markers her docs are using. ...Read more

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Esophegeal cancer markers?

Esophegeal cancer markers?

Not for early CA: Unfortunately , non to detect very early stages ca 125 , ca 19.9 , cea will be elevated at later stages, used to monitor the disease. Ca 72.4 cyfra 21.1 being tested .Scca (also for ca of cervix other squamous ca ). ...Read more

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Does low levels of tumor marker indicate no more cancer?

Does low levels of tumor marker indicate no more cancer?

Not necessarily: Tumor makers are good for monitoring the response to treatment. Low or better yet, absent levels may mean that tumor is not there, however, more often it indicates a remission and levels increase if there is a recurrence. Therefore low levels of tumor markers do not always mean "no more cancer". ...Read more

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What are tumor markers, and does having them mean that I have cancer?

What are tumor markers, and does having them mean that I have cancer?

Blood tests: Tumor markers are blood tests that are sometimes used to follow progression of cancer once it has already been diagnosed. We rarely, if ever, use tumor makers to make a cancer diagnosis. There are many other reasons why these markers may be elevated including inflammation, infection, etc. ...Read more

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Husband diagnosed with cancer & given chemo 18mnths ago. Now they say his markers are raised?

Maybe more ca cells.: Some cancer cells secrete a hormone or antigen that can be measured in the blood, and give a hint of a tumor's presence or a recurrence of growth of new cancer cells. Examples are psa in prostate ca, cea in colon ca. How specific the markers are, the quantity increase, the sensitivity all are factors determining the significance clinically. The trained oncologist will discuss meaning & rx options. ...Read more

Marker (Definition)

A "marker" is a protein or enzyme that can represent a disease process. Some markers are specific for a particular disease, while ...Read more