肝局灶性结节增生的CT表现与病理对照分析  

Analysis of CT Manifestations of Hepatic Focal Nodular Hyperplasia with Pathologic Correlation

作　　者：许尚文[1] 陈自谦[1] 钱根年[1] 钟群[1] 

机构地区：[1]南京军区福州总医院医学影像科

出　　处：《放射学实践》2009年第5期506-509,共4页Radiologic Practice

摘　　要：目的:总结分析肝脏局灶性结节增生(FNH)的平扫和多期增强扫描的CT表现,探讨其诊断价值。方法:回顾性分析18例(21个病灶)经病理证实的FNH的平扫及三期增强CT表现。结果:CT平扫21个病灶中7个病灶呈均匀低密度,14个呈不均匀低密度。增强扫描动脉期除中央疤痕外,19个病灶有明显均匀强化、1个中等不均匀强化、1个轻度不均匀强化,6个病灶还可见病灶中心或周边增粗、扭曲的动脉影;门脉期和延迟期扫描显示10个病灶呈略高密度,6个病灶呈等密度,5个病灶呈略低密度。平扫显示7个病灶伴有中央星状疤痕者,多期增强CT显示15个病灶有中央疤痕并于平衡期出现延迟强化。结论:CT检查能较全面显示FNH的病理特征和血供特点,FNHCT平扫为低密度,增强扫描以"快进慢出"为主要特征。Objective：To analyze the CT manifestations of hepatic focal nodular hyperplasia （FNH） without and with multi phase contrast enhancement,and to investigate its diagnostic value. Methods： CT images pre-and post- 3-phase dynamic enhancement in 18 patients （21 lesions in total） with pathology proved FNH were analyzed retrospectively. Results： On plain CT scans,7 FNH lesions were homogeneously hypo attenuated and 14 lesions were heterogeneously hypo-attenuated. In arterial phase,apart from the central scar, 19 lesions were markedly and homogeneously enhanced;moderately and heterogeneously enhanced as well as slightly and heterogeneously enhanced could be assessed in one lesion each. Tortuous and enlarged arteries were seen at the center or periphery in 6 out of the 21 lesions. In the portal venous phase and delayed phase, 10 lesions remained slightly hyperdense,6 lesions turned to isodense,and 5 lesions turned to slightly hypodense. Star shaped central scar was found in 7 lesions on unenhanced images and in 15 lesions on multi-phase contrast enhanced images, delayed enhancement was showed on equilibrium phase. Conclusion：The pathology and blood supply characteristics of FNH could be revealed by CT examination. The CT findings of FNH were hypo-attenuated on plain scan and ＂fast in, delayed washout＂ on enhanced images.

关 键 词：局灶性结节增生 肝脏 体层摄影术 X线计算机 

分 类 号：R575[医药卫生—消化系统] R814.42[医药卫生—内科学]