肝内肝动脉-门静脉分流的CT表现及其诊断意义

被引:18
作者
张翔
白人驹
孙浩然
于铁链
王永利
机构
[1] 天津医科大学总医院放射科
关键词
肝; 动静脉分流; 体层摄影术,X线计算机; 血管造影术,数字减影;
D O I
10.13437/j.cnki.jcr.2002.01.019
中图分类号
R816.5 [腹部及消化系];
学科分类号
摘要
目的 分析 18例肝内肝动脉 门静脉分流 (APS)的螺旋CT动态增强表现 ,研究其与DSA表现的相关性 ,并探讨APS的形成原因及诊断意义。资料与方法  18例APS中 ,13例为肝细胞癌 (HCC) ,2例单纯肝硬化 ,1例HCC术后肝内多发转移 ,1例肝脓肿穿刺治疗后 ,1例肝脏无明确病变。 18例APS均行螺旋CT动态增强三期扫描 ,其中 7例还进行了DSA检查。结果  18例APS中 ,17例的CT增强动脉期表现分三型 :(1)门静脉三级 (亚段 )及以上分支提早显影 (Ⅰ型 ) 11例 ;(2 )肿瘤 /病变周围肝实质提早强化 (Ⅱ型 ) 6例 ;(3)肝脏边缘结节形、楔形提早强化区 ,且其邻近无占位性病变 (Ⅲ型 ) 3例。另有 1例CT未发现确切APS征象。 7例APS在DSA动脉期表现为 :门静脉三级及以上分支提早显影 (Ⅰ型 ) 1例 ;门静脉三级以下分支提早显影 ,且迂曲、增粗 (Ⅱa型 ) 6例 ;呈“双轨征”表现 (Ⅱb型 ) 4例 ,其中包括CT上无APS表现的 1例。结论 APS的病因中 ,HCC是最主要的 ,其他原因还有肝硬化、医源性肝损伤以及不明原因者。跨血管、跨肝窦、跨肝血管丛的途径是肝癌、肝硬化APS形成的主要机制。APS的CT和DSA表现并无显著相关性。
引用
收藏
页码:49 / 52
页数:4
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