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    问题 肿瘤标志物,癌抗原242(CA242)代表什么?

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  • 解答:医学编辑
  • 收录时间:2023-04-19

导读:CA242是一种新的肿瘤相关抗原,当消化道发生肿瘤时,其含量升高。对胰腺癌、结直肠癌有较高的敏感性与特异性,分别有86 %和62 %的阳性检出率,对肺癌、乳腺癌也有一定的阳性检

回答

CA242是一种新的肿瘤相关抗原,当消化道发生肿瘤时,其含量升高。对胰腺癌、结直肠癌有较高的敏感性与特异性,分别有86 %和62 %的阳性检出率,对肺癌乳腺癌也有一定的阳性检出率。用于胰腺癌和良性肝胆疾病的鉴别诊断及预后,也用于结直肠癌病人术前预后及复发鉴别。
 
癌抗原242(CA242)

CEA与CA242联合检测可提高敏感性,与单独采用CEA检测相比,对结肠癌可提高40~70%,对直肠癌提高达到47~62%。CEA与CA242无相关性,具有独立的诊断价值,且二者之间具有互补性。
 
正常参考值:0~20 U/ml

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癌抗原242
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