二维及彩色多普勒超声对肝癌合并门静脉瘤栓的诊断

本文应用二维超声及彩色多普勒血流显像（CDFI）探查了28例肝癌合并门脉瘤栓的患者。结果示：门脉瘤栓以主干、主干＋右支及主干＋左支＋右支最多见，分别为35．7％、25％及25％。多好发于弥漫型肝癌占53．6％。门脉内径明显增宽。CDFI探查有以下特点：门脉血流中断（42．9％）；腔内可见线状纤细的间断或斑点状血流信号（14％）；血流束变细或充盈缺损（28．6％）；瘤栓内探及动脉血流频谱（21．4％）；侧支循环血流（21．4％）；由肝门向肝内放射状扩张的动脉血流（89％）。二维超声及CDFI不但可以提高对门脉瘤栓的检出率，且对门脉阻塞程度的判断极有帮助。

Diagnosis of Primary Hepatic Carcinoma Complicated Portal Vein Tumor Thrombosis with Two-dimensional Ultrasound and Color Doppler Flow Imaging

Twenty-eight cases of primary hepatic carcinoma complicated portal vein tumor thrombosis were studied with US and color Doppler flow imaging.(CDFI). All the infiltrated portal veins were dilated. Most of the thrombosis located within the main portal vein. 53. 6% of them originated from diffuse hepatic carcinoma. Color blood flow of the invaded portal vein may be disappeared, partly defected, linear, thin, spoted, with collateral circulation or regurgitation. Radial dilatation of the intrahepatic arteries is the most important character consisted in 89% cases. CDFI is not only useful in diagnosis of portal vein thrombosis, but also valuable for evaluating the degree of portal vein obstruction.