肝细胞癌影像特征结合实验室指标在微血管侵犯中的预测价值

Value of imaging features and laboratory indicators in predicting microvascular invasion of hepatocellular carcinoma

目的探讨CT与MRI的影像特征结合实验室指标对肝细胞癌(HCC)患者发生微血管侵犯(MVI)及其分级情况的预测作用。方法应用CT与MRI平扫及增强扫描对研究对象进行术前检查,提取检查结果中的肿瘤长径、形态、数量、边缘及肿瘤包膜情况、多结节融合状态或局部外凸结节情况、内部供血血管情况、有无变性或坏死、瘤周围有无低密度或低信号存在等特征,结合年龄、术前甲胎蛋白(AFP)水平、乙肝表面抗原及乙肝e抗原的检测结果等临床指标,对HCC患者发生MVI情况进行分析。结果发生MVI的HCC患者AFP更易升高;肿瘤长径越大发生MVI的概率越高;影像检查结果显示肿瘤边缘模糊以及局部包膜不完整为HCC发生MVI的独立危险因素。但所有提取的影像特征及临床指标对MVI的分级无预测价值。结论HCC的部分影像学特征及临床指标对MVI的发生具有一定预测价值。

Objective To evaluate the prediction of microvascular invasion(MVI)and its grading in patients with hepatocellular carcinoma(HCC)by computed tomography(CT)and magnetic resonance imaging(MRI)features combined with laboratory indices.Methods Using plain and enhanced CT and MRI scan to examine the participants preoperatively,the features of tumor length diameter,shape,number,margin and tumor capsule,whether multiple nodules are fused,whether external convex nodules are visible locally,whether blood supply vessels are visible inside or degeneration or necrosis exists,and whether low density or signal exists around the tumor that are extracted from the examination results,combined with clinical indicators,such as age,preoperative alpha-fetoprotein(AFP)level,and presence of hepatitis B surface and e antigens to analyze the occurrence of MVI in patients with HCC.Results Patients with HCC and MVI were more likely to have elevated AFP;the larger the tumor length and diameter,the higher the incidence of MVI.CT and MRI showed that the features of blurred tumor edges and incomplete local capsule were independent risk factors for MVI of HCC.All the extracted image features and clinical indicators had no predictive value for MVI grading.Conclusion A few imaging features and clinical indicators of HCC have definite predictive value for the occurrence of MVI.