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Ðề tài: Cea

  1. #1
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    Default Cea

    Chủ Đề: Default Cea

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    ►Ngày Gửi: 20-09-09 ►Đánh Giá: Sao

    **Carcinoembryonic antigen (CEA) is a protein that is found in embryonic tissues. By the time a baby is born, detectable levels in the blood disappear. In adults, CEA is normally present at very low levels in blood. When the concentration of CEA is elevated, it may indicate that a cancer is present. However, an increase in CEA may also be due to benign conditions.

    *CEA is used mainly to monitor the treatment of cancer patients, especially those with colon cancer. Following surgery, CEA values are helpful in monitoring the response to therapy and in determining whether the disease has recurred. CEA is also used as a marker for other forms of cancer, including cancers of the rectum, lung, breast, liver, pancreas, stomach, and ovary. Not all cancers produce CEA, and a positive CEA test is not always due to cancer. Therefore, CEA is not used for screening the general population.

    Increased CEA levels can indicate some non-cancer-related conditions, such as inflammation, cirrhosis, peptic ulcer, ulcerative colitis, rectal polyps, emphysema, and benign breast disease.Since not all cancers produce CEA, it is possible to have cancer but also have a normal CEA level.

    Individuals who smoke cigarettes tend to have higher CEA levels than non-smokers.
    When cancer spreads to other organs, CEA may be present in other bodily fluids besides blood. For example, if CEA is detected in cerebrospinal fluid, this may indicate a central nervous system metastasis.

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    CA(Cancer Antigen) 19-9 is not sensitive or specific enough to be considered useful as a tool for cancer screening. Its main use is as a tumor marker:

    • to help differentiate between cancer of the pancreas and bile ducts and other non-cancerous conditions, such as pancreatitis;
    • to monitor a patient's response to pancreatic cancer treatment; and
    • to watch for pancreatic cancer recurrence.

    CA 19-9 may be ordered along with other tests, such as carcinoembryonic antigen (CEA), bilirubin, and/or a liver panel, when a patient has symptoms that may indicate pancreatic cancer, including abdominal pain, nausea, weight loss, and jaundice.

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    cám ơn Same vì cung cấp thông tin hữu ích

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