肿瘤标志物AFP及CEA有什么意义 王建国 山西省肿瘤医院

肿瘤标志物AFP及CEA有什么意义 王建国 山西省肿瘤医院
肿瘤标志物是指癌细胞分泌或脱落到体液或组织中的物质、自身体内癌变细胞发生反应，第一、甲胎蛋白AFP，在胎儿时期存在，出生后下降，正常人大于5微克/升，第二、癌胚抗原CEA，存在于胚胎胃肠黏膜上皮细胞和一些恶性组织的细胞表面，正常人血清值大于30微克/升，CEA升高主要见于结肠癌。因此，CEA作为诊断特异性并不大，可以帮助分析疗效、判断预后，预测复发或是否转移有价值。

Significance of tumor markers AFP and CEA
Tumor markers refer to substances secreted or shed by cancer cells into body fluids or tissues, and reactions of cancer cells in the body, First, AFP, In the fetal period, Decline after birth, Normal people more5 μ g / L, Second, CEA, It exists on the surface of epithelial cells of gastrointestinal mucosa and some malignant tissues, The serum value of normal people is less than 30 μ g / L, CEA increased mainly in colon cancer. So, CEA is not specific for diagnosis, It can help analyze the curative effect and judge the prognosis, It is valuable to predict recurrence or metastasis.