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4例肝脏原发淋巴上皮瘤样癌的CT及MRI表现

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摘要 目的:探讨肝脏原发淋巴上皮瘤样癌(LELC)的CT、MRI表现及鉴别诊断。方法:回顾性分析4例经手术病理证实的肝脏淋巴上皮瘤样癌患者的术前临床资料及CT、MRI图像,分析其影像学特点。结果:4例病灶均为包膜下单发病灶,CT平扫呈稍低密度,均未见钙化。T_(1)WI均呈低信号;3例T_(2)WI呈稍高信号,内见小斑片状稍低信号,1例合并出血坏死,T_(2)WI呈高低混杂信号。DWI均呈高信号,ADC值中位数0.74(0.68~1.02)×10^(-3) mm^(2)/s。病灶强化方式多样:3例快进快出强化,1例呈动脉期边缘环形强化,瘤内轻度持续强化,但平衡期强化仍低于肝实质,4例病灶MRI平衡期呈低或稍低信号,瘤内可见线状、星芒状轻度延迟强化。2例行肝胆期扫描,均呈低信号。4例均未见肝内胆管扩张。结论:肝LELC具有一定影像学特点,多为肝包膜下单发病灶,坏死少见,DWI呈高信号,ADC值明显减低,强后动脉期明显强化或边缘环形强化,平衡期强化常低于肝实质,多无明显假包膜,灶内可线状或星芒状轻度延迟强化,肝胆期呈低信号。
出处 《影像研究与医学应用》 2024年第7期186-189,193,共5页 Journal of Imaging Research and Medical Applications
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