小肝细胞癌的少见CT强化表现及分析
Chinese Journal of CT and MRI(2015)
Abstract
目的:研究小肝细胞癌的少见CT强化表现及原因,以提高小肝细胞癌的诊断准确性。方法回顾性分析经手术及病理证实的20例小肝细胞癌的25个癌灶的少见CT强化表现,与典型肝细胞癌强化图像对比,总结其影像学特征。结果20例患者共发现25个癌灶。除2例患者平扫呈等密度影,其它病灶平扫均呈低密度灶。增强后5例动脉期呈高密度影,门脉期、平衡期等密度影;2例动脉期、门脉期呈高密度影,平衡期呈低密度影;3例动脉期、门脉期呈高密度影,平衡期仍呈高密度影,边缘见环形廓清现象;2例增强后动脉期呈等密度影,门脉期、平衡期呈低密度影,边界较清楚;2例增强后三期未见明显强化,即“三低”病灶;3例增强后动脉期呈轻度强化,强化程度低于肝实质,边界较清楚并呈轻度不规整,门脉期仍呈低密度影,病灶内散在更低密度灶,较前明显,平衡期呈低密度影;3个患者呈多灶性起源,其中2例患者各3个病灶,各病灶呈现同步强化;1例患者2个病灶,呈不同步强化。结论小肝细胞癌的少见强化表现多种多样,但三期动态CT扫描技术是小肝细胞癌诊断的可靠影像学诊断方法。
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Key words
Small Hepatocellular Carcinoma,Computed Tomography,Imaging Performance
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