肝脏局灶性结节性增生的超声表现

UI trasonography of liver focal nodular hyperplasia

目的总结肝脏局灶性结节性增生(FNH)的超声表现,探讨超声检查的诊断价值。方法 14例肝脏局灶性结节性增生患者均经病理证实,共16个病灶接受了二维灰阶超声及彩色多普勒超声检查。结果 14例16个病灶的二维灰阶超声检出率为100%。二维灰阶超声显示10个病灶位于肝右叶,5个病灶位于肝左叶,1例病灶位于肝左叶与右叶之间。6个病灶表现为等或稍低回声,8个病灶为低回声,2个病灶为高回声。12个病灶探及较丰富彩色多普勒动脉频谱,4个病灶血流呈现轮辐状;峰值流速为26.1～121.6cm/s,均值为58.5cm/s;阻力指数(RI)为0.36～0.81,均值为0.51。所有患者的AFP均为阴性。结论肝脏局灶性结节性增生具有较为特殊的超声表现,结合其AFP为阴性,可提高超声检查的诊断率。

Objective To investigate the ultrasonographic characteristics of liver focal nodular hyperplasia（FNH）,and to evaluate the application of ultrasound in FNH diagnosis.Methods The findings of two-dimensional gray scale ultrasound and color Doppler ultrasound were reviewed retrospectively,which included 16 nodules form 14 patients.All of the nodules were proved pathologically as FNH.ResultsThe detection rate of FNH by two-dimensional gray scale ultrasound was 100%.By conventional grey scaleultrasound,10 nodules located in right lobe of liver,5 nodules located in left lobe of liver and 1 nodule located between right and left lobe of liver,6 nodules were isoechoic or slightly hypoechoic,8 nodules were hypoechoic,and 2nodules were hyperechoic.Color flow with arterial spectrum was detected in 12 nodules,and radiated wheal like color flow was visualized in 4 nodules.The maximal velocity was 58.5cm/s（26.1~121.6cm/s）,and the resistent index was 0.51（0.36~0.81）.The result of blood tests showed all patients were AFP negative.ConclusionsUl trasonography of FNH is characteristic.Gray scale sonography combined with color Doppler ultrasound and AFP tests can improve the diagnostic accuracy of FNH.