平扫及钆塞酸二钠增强MRI鉴别诊断透明细胞型与普通型肝细胞癌

Plain and Gd-EOB-DTPA enhanced MRI for differentiating clear cell and non-otherwise specified hepatocellular carcinoma

目的探讨平扫及钆塞酸二钠(Gd-EOB-DTPA)增强MRI对鉴别诊断透明细胞型肝细胞癌(CCHCC)与普通型肝细胞癌(NOS-HCC)的价值。方法纳入经手术病理证实的36例CCHCC(CCHCC组)和72例年龄匹配的NOS-HCC患者(NOS-HCC组),以单因素及分析多因素logistic回归分析回顾性评估其临床、病理及上腹部平扫+Gd-EOB-DTPA增强MRI,筛选鉴别CCHCC与NOS-HCC的独立预测因素;绘制受试者工作特征(ROC)曲线,计算曲线下面积(AUC),评价MRI相关独立预测因素及其联合鉴别CCHCC与NOS-HCC的效能。结果病理Edmondson-Steiner分级及MRI见病灶含脂肪成分、平扫T1WI病灶与肝脏信号强度比值(LLR_(T1WI))及病灶与肌肉信号强度比值(LMR_(T1WI))均为CCHCC与NOS-HCC的独立预测因素(P均<0.05)。以病灶含脂肪成分及LLR_(T1WI)、LMR_(T1WI)鉴别CCHCC与NOS-HCC的AUC分别为0.652、0.689、0.687,三者联合的AUC为0.762,高于单一病灶内含脂肪成分(Z=-2.401,P=0.016),而与单一LLR_(T1WI)(Z=-1.841,P=0.066)及LMR_(T1WI)(Z=-1.440,P=0.150)差异均无统计学意义。结论平扫及Gd-EOB-DTPA增强MRI可用于鉴别CCHCC与NOS-HCC。

Objective To investigate the value of plain and gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid(Gd-EOB-DTPA)enhanced MRI for differentiating clear cell hepatocellular carcinoma(CCHCC)and non-otherwise specified hepatocellular carcinoma(NOS-HCC).Methods Totally 36 CCHCC(CCHCC group)patients and 72 age-matched NOS-HCC(NOS-HCC group)patients were enrolled.Univariate analysis and multivariate logistic regression were used to retrospectively analyze the clinical,pathological and plain upper abdominal MRI as well as Gd-EOB-DTPA enhanced MRI data,so as to screen the independent predictors for distinguishing CCHCC and NOS-HCC.Receiver operating characteristic(ROC)curve was drawn,and the area under the curve(AUC)was calculated to evaluate the efficacy of MRI-related independent predictors for distinguishing CCHCC and NOS-HCC individually and in combination.Results Pathologic Edmondson-Steiner grade of HCC,lesions with fat components showed on MRI,the ratio of lesion-to-liver signal intensity on plain T1WI(LLR_(T1WI))and the ratio of lesion-to-muscle signal intensity on plain T1WI(LMR_(T1WI))were all independent predictors for distinguishing CCHCC from NOS-HCC(all P<0.05).The AUC of lesions with fat components,LLR T1WI and LMR T1WI for distinguishing CCHCC and NOS-HCC alone was 0.652,0.689 and 0.687,respectively,and of the combination was 0.762,higher than that of lesions with fat components(Z=-2.401,P=0.016)but not different with AUC of LLR_(T1WI)(Z=-1.841,P=0.066)and LMR_(T1WI)(Z=-1.440,P=0.150)alone.Conclusion Plain and Gd-EOB-DTPA enhanced MRI could be used to distinguish CCHCC and NOS-HCC.