4种血清肿瘤标志物及粪便隐血的联合检测在Dukes B期结肠癌诊断中的应用

摘要

目的 探讨血清癌胚抗原(CEA)、糖链抗原199(CA199)、糖链抗原125(CA125)、甲胎蛋白(AFP)和粪便隐血联合检测在Dukes B期结肠癌中的诊断价值.方法 检测2013年3月至2015年8月56例结肠癌患者(结肠癌组)、35例结肠息肉良性疾病患者(息肉组)、41例体检健康者(健康对照组)的上述指标及其对应的阳性检出率.分析5项指标单个检测和联合检测的灵敏度、特异度.结果 结肠癌组的血清CEA、CA125、CA199及粪便隐血水平均明显高于息肉组和健康对照组(P＜0.05).与息肉组相比,AFP水平及其血清阳性率比较,差异无统计学意义(P＞0.05).血清CEA、CA125、CA199及粪便隐血入选Logistic回归方程,对应的曲线下面积分别为0.745、0.886、0.792、0.864,阳性检出率分别为48.2％、35.7％、39.3％和78.6％;联合检测可使灵敏度、特异度、曲线下面积分别提高到87.5％、92.1％、0.957,显著优于单项检测.结论 CEA、CA199、CA125、隐血联合检测能为早期诊断结肠癌提供有力的依据.%Objective To study the diagnostic value of combined detection of serum CEA,CA199,CA125,AFP and fecal occult blood(FOB) in Dukes B stage colon carcinoma.Methods The above indicators in 56 patients with colon carcinoma (colon carcinoma group),35 patients with colonic polyp benign disease and 41 healthy individuals undergoing physical examination were measured.Then the sensitivity,and specificity of single index detection and their combined detection were analyzed.Results The levels and positive rates of CEA,CA199,CA125 and FOB in the colon cancer group were significantly higher than those in the colonic polyp group and healthy control group (P＜0.05),but the AFP level and positive rate had no statistical difference compared with the colonic polyp group.Serum CEA,CA125,CA199 and FOB were selected into the Logistic regression equation.The corresponding areas under the curve (AUC) were 0.745,0.886,0.792 and 0.864 respectively;the positive detection rates were 48.2 ％,35.7 ％,39.3 ％ and 78.6 ％ respectively.The combined detection could increased the specificity,sensitivity and AUC to 87.5 ％,92.1％ and 0.957,which were more superior to that in the single index detection.Conclusion The combined detection of serum CEA,CA199,CA 125 and FOB can provide the powerful basis for early diagnosing colonic cancer.