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  • Title: [Antigens (CEA and CA 19-9) in diagnosis and prognosis colorectal cancer].
    Author: Grotowski M.
    Journal: Pol Merkur Lekarski; 2002 Jan; 12(67):77-80. PubMed ID: 11957811.
    Abstract:
    carcinoembryonic antigen (CEA) was first described more than three decades ago, when its presence was demonstrated in fetal gut tissue and in tumors from gastrointestinal tract. Subsequently, CEA was detected in the circulation of patients and recognized as a serum marker for colorectal cancer. This tumor marker has not been advocated as a screening test for colorectal cancer, however a preoperative CEA serum level is useful for diagnosis and prognosis of recurrence and survival in colorectal cancer patients. The levels of CEA increased with increasing tumor stage. Expression of carbohydrate antigen (CA 19-9) has been described in various malignancies and also in colorectal cancer. This antigen also has not been advocated as a screening test for colorectal cancer. The levels of CA 19-9 increased in advanced stages of colorectal cancer. Despite its lower sensitivity than CEA in early stages of colorectal cancer, the combination of both antigens can provided more information than CEA alone for prognosis of recurrence and survival in those patients.
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