肝脏肥大性假肿块的CT及MR表现  

CT and MR Findings of Hepatic Hypertrophic Pseudomass

作　　者：任阿红 冯慧霞 刘殿源 王振常[1] 杨正汉[1] REN Ahong;FENG Huixia;LIU Dianyuan(Department of Radiology,Beijing Friendship Hospital,Capital Medical University,Beijing 100050,P.R.China)

机构地区：[1]首都医科大学附属北京友谊医院放射科,北京100050 [2]郑州市中心医院放射科,450000 [3]大连市友谊医院放射科,116001

出　　处：《临床放射学杂志》2024年第10期1730-1736,共7页Journal of Clinical Radiology

基　　金：国家自然科学基金项目(编号:62171298、62476015);北京学者基金资助项目(编号:京人社专家发[2015]160号)。

摘　　要：目的总结分析肝脏肥大性假肿块的CT和MRI诊断要点。方法回顾性分析2015年1月至2024年3月接受肝脏CT和/或MRI检查,影像诊断为肥大性假肿块或病理证实为非肿瘤性病变患者的临床及影像资料,对其影像学特征进行分析。结果最终纳入16例肝硬化患者(21个肝脏肥大性假肿块),均呈现肿块样外观,其内均有非扭曲血管穿行。CT平扫呈等或稍高密度,动脉晚期呈等或稍低强化,门静脉期及延迟期呈等或稍低强化;MRI T_(1)WI肝脏肥大性假肿块呈等或不同程度高信号,抑脂T_(2)WI、扩散加权成像(DWI)呈不同程度低信号,动脉晚期、门静脉期及延迟期呈不同程度低强化,肝胆期呈等强化。结论肝脏肥大性假肿块发生在肝硬化基础上,熟悉其好发部位和相应CT及MRI表现有利于肝脏肥大性假肿块的定性诊断。Objective To summarize and analyze the CT and MRI features of hepatic hypertrophic pseudomass.Methods The clinical and imaging data of patients with hypertrophic pseudomass or pathologically confirmed non-neoplastic lesions in our hospital from January 2015 to March 2024 were retrospectively analyzed,and the imaging features were analyzed.Results A total of 16 cirrhosis patients(21 hepatic hypertrophic pseudomass)were enrolled in this study.All hepatic hypertrophic pseudomass presented as a lump,with undistorted blood vessels.On plain CT scan,85.71%were iso-or slight hyper-density,92.85%were iso-or slight hypo-enhancement on late arterial phase,and all showed iso-or slight hypo-enhancement on portal and delayed phase.The hepatic hypertrophic pseudotumor showed iso-or different degrees of high signal on T_(1)WI,low signal on fat-suppression T_(2)WI and DWI,low enhancement on late arterial phase,portal venous phase and delayed phase,and iso-enhancement on hepatobiliary phase.Conclusion The hypertrophic pseudomass of the liver occurs on the basis of liver cirrhosis.Familiarity with its predilection location and corresponding CT and MRI findings are helpful for the qualitative diagnosis of hepatic hypertrophic pseudomass.

关 键 词：肝脏 肥大性假肿块 体层摄影术 X线计算机 磁共振成像 

分 类 号：R575.2[医药卫生—消化系统] R816.5[医药卫生—内科学] R445.2[医药卫生—临床医学]