中文摘要：

目的分析肝局灶性结节性增生与肝细胞癌MRI平扫及强化特征。方法选择2011年5月～2012年5月建德市第一人民医院手术病理证实的肝细胞癌患者35例及肝局灶性结节性增生患者25例为研究对象，均接受MRI平扫及动态增强扫描。分析并比较两者影像学特征的差异。结果肝细胞癌和肝局灶性结节性增生均以肝右叶多见。分别占62．9％和64．0％。但肝局灶性结节性增生位于肝包膜下的比例（52．0％）显著高于肝细胞癌（20．0％），差异有统计学意义（P〈O．05）。肝细胞癌平均直径为（3．5±1．4）cm，肝局灶性结节性增生平均直径为（3．8±1．2）cm，两者差异无统计学意义（P〉0．05）。肝局灶性结节性增生存在中心瘢痕的比例显著高于肝细胞癌，肝细胞癌伴有门静脉癌栓及肝硬化的比例显著高于肝局灶性结节性增生，其差异均有统计学意义（P〈0．05）。结论MRI可以清晰显示肝局灶性结节性增生与肝细胞癌特征．在其诊断和举别诊断中具右轮高的价倌．

英文摘要：

Objective To analyze the plain and enhanced MRI scan feature on hepatic focal nodular hyperplasia and hepato-cellular carcinoma. Methods 35 patients with hepatocellular carcinoma and 25 patients with hepatic focal nodular hyperplasia from May 2011 to May 2012 in the First People＇s Hospital of Jiande City were chosen for the study, all the patients were per-formed by plan and dynamic contrast-enhanced MRI scan. The differences between the two imaging features were analyzed and compared. Results Right lobe was the most location both in hepatocellular and hepatic focal nodulor hyperplasia, the percent was 62.9% and 64.0% respectively. However, hepatic focal nodular hyperplasia subcapsular proportion （52.0%） was significantly higher than hepatocellular carcinoma （20.0%）, the difference was statistically significant （P 〈 0.05）. The average diameters of hepatoeellular carcinoma was （3.5±1.4） cm, hepatic focal nodular hyperplasia average diameters was （3.8±1.2） cm, the difference was not statistically significant （P 〉 0.05）. The presence of hepatic focal nodular hyperplasia central scar was significantly higher than the proportion of hepatocellular carcinoma, cirrhosis and portal vein tumor thrombus of hepatocellular carcinoma was significantly higher than the proportion of hepatic focal nodular hyperplasia, and the differences were statisti-cally significance （P 〈 0.05）. Conclusion MRI can clearly show the hepatic focal nodular hyperplasia and hepatocellular car-cinoma characteristics, it has a higher value in the diagnosis and differential diagnosis.