肝硬化内小肝细胞癌的磁共振成像研究进展

The Magnetic Resonance Imaging Study Progress of Small Hepatocellular Carcinoma in Cirrhosis Liver

肝硬化基础上合并的低分化小肝细胞癌(HCC)磁共振成像(MRI)增强扫描表现为不强化或轻中度强化,在弥散加权成像(DWI)上多呈高信号,容易诊断。但当分化较好的小HCC DWI表现为等信号或稍高信号且常规MRI增强扫描表现为不强化或仅有轻度强化时,与肝硬化结节或结节样增生的影像表现有重叠,诊断有一定的困难。该文通过常规MRI扫描、DWI扫描、增强扫描及临床生化特征,综述了肝硬化基础上合并小HCC的影像表现及鉴别诊断,以提高小HCC的诊断水平。

The low differentiation of small hepatocellular eacinorma（HCC） in cirrhosis with non or mild- to-moderate enhancement after contrast management of magnetic resonance imaging （MRI） shows high signal in diffusion weighted imaging （ DWI）, which is easy for diagnosis. However for cases with well differentiated small HCC DWI isointensity or slightly high intensity which show non or mild enhancement in enhanced regular MRI scanning,with overlap with the image of cirrhosis nodules or nodular hyperplasia, there is a certain difficulty for the differentiation diagnosis. Here is to make a review of the features and differential diagnosis of small HCC in cirrhosis on conventional MRI, DWI and enhanced MRI and their clinical biochemical characteristics,expecting to improve the diagnosis of small HCC in cirrhosis.