超声造影诊断肝脏局灶性结节状增生的价值

目的：探讨超声造影诊断肝脏局灶性结节状增生的价值。材料和方法：回顾分析了11例肝脏局灶性结节状增生的超声造影表现。9例于造影后经超声引导穿刺确诊,2例经手术确诊。结果：11例病灶动脉期均快速显著增强。9例病灶动脉早期呈轮辐状增强,造影三期回声强于周边肝实质,实质期可见轮辐状低回声；2例病灶动脉早期快速增强,动脉期及门脉期回声强于周边肝实质,实质期回声与肝实质等同,未见轮辐状低回声。结论：超声造影所显示的肝脏局灶性结节状增生的增强特征,有助于临床诊断。部分病灶超声造影表现缺乏特异性,确诊仍需要结合其他影像学方法和穿刺活检。

Value of Contrast-Enhanced Sonography in the Diagnosis of Hepatic Focal Nodular Hyperplasia

Purpose:In this study the value of contrast-enhanced sonography in the diagnosis of hepatic focal nodular hyperplasia(FNH) was assessed.Materiuls and Methods:The contrast enhanced sonography of 11 FNH patients were retrospectively analyzed.Contrast agent (Sonovue)in combination with Contrast Pulse Sequencing(CPS)software were used in the sonographic study.The pathologic diagnosis was established by ultrasound-guided biopsy and by surgical resection in 9 and 2 patients.Results:All lesions were found rapidly enhanced in the arterial phase compared with surrounding liver parenchyma.Nine lesions remained hyperechoie through all phases,with a spoked-wheel pattern in early arterial phase and a spoked-wheel hypoechoic zone in later phase.Two lesions,hyperechoic in the arterial and portal phase and isoechoic in the late phase,showed no spoked-wheel vascularity.Conclusions:Contrast-enhanced ultrasound can show the typical en- hancement pattern of focal nodular hyperplasia.But a few FNH of no typical enhancement pattern might rely on other imaging modalities and biopsy to diagnose.