肝小静脉闭塞病的CT表现(附14例分析)

CT imaging of hepatic veno-occlusive disease(an analysis 14 cases)

目的 研究肝小静脉闭塞病的临床和影像表现，探讨其影像特征。方法 搜集14例外伤后服用“土三七”经病理或临床诊断的肝小静脉闭塞病资料，男6例，女8例，年龄41～73岁，中位年龄56岁。均经CT3期增强扫描、延迟扫描及彩色B超（BUS）检查，其中2例接受血管造影检查，4例经CT导引下肝组织穿刺活检。结果 14例CT平扫均显示肝肿胀、腹水、肝实质密度均匀或不均匀减低等急性期表现，增强扫描均表现为全肝弥漫的密度不均匀改变；门静脉期表现具特征性的“地图状”、斑片状强化和低灌注区。所有病例肝静脉显示不清或未见显示，下腔静脉肝段受压变细、变扁、变窄；但14例BUS和进行了血管造影检查的2例显示肝静脉及下腔静脉无梗阻。4例穿刺活检病理诊断为肝小静脉闭塞病。结论 CT增强扫描检查对肝小静脉闭塞病影像诊断有重要价值，有服用中药“土三七”史者CT发现肝脏淤血表现高度提示肝小静脉闭塞病。

Objective To probe imaging characteristics of the hepatic veno-occhsive disease （VOD） based on clinical features and abdomen CT findings. Methods Fourteen patients including 6 mule and 8 femule aged from 41 to 73 years were enrolled in this study. They all had previous trauma history and notoginseng was given as herbal remedy. Dynamic enhanced CT and color Dopplor ultrasound examinations were routinely used. Two of them received venous angiography and four cases were pathologically proved as VOD after CT guided needle biopsy. Results Hepatic swelling and ascites were found on plain CT scan. Diffuse patchy areas without enhancement indicative of poorly hepatic peffusion were found. Hepatic veins were compressed and became thin, and inferior vena cava was flat and narrow without distal dilation or collateral circulation. No obstruction of hepatic veins and inferior vena cava was found on ultrasound and venography. Conclusion Dynamic enhanced CT is highly valuable for early assessing VOD and imaging features of venous hepatic congestion found on CT was strongly suggestive of VOD if there＇s previous history of treatment of gynura segetum.