Intrahepatic Portal Venous Variations: Demonstration by Helical CT During Arterial Portography
Intrahepatic Portal Venous Variations: Demonstration by Helical CT During Arterial Portography
复制标题
DOI：
10.1097/00004728-200009000-00024
复制
发表时间：
2000-09
影响因子：
1.3
通讯作者：
Y. Baba;H. Hokotate;H. Nishi;H. Inoue;M. Nakajo
中科院分区：
文献类型：
--
作者：
Y. Baba;H. Hokotate;H. Nishi;H. Inoue;M. Nakajo
目的应用螺旋CT动脉门静脉造影（CTAP）评估肝内门静脉变异的发生率和类型。方法回顾性分析192例无门静脉血管侵犯或扭曲的患者的CTAP图像，分析其门静脉变异。结果192例患者中10例（5.2%）有三分叉，5例（2.6%）有门静脉主干右后段分支，5例（2.6%）门静脉左水平段缺如，1例（0.5%）门静脉左外侧段分支缺如。在没有水平段的患者中，2例患者的右侧圆韧带与胆囊错位相关，另1例患者的肝内门静脉分支完全分支于脐静脉样段。左外侧段分支缺失的患者，右门静脉段位于包膜下。结论CTAP显像可显示肝内门静脉变异。
Purpose We assessed the prevalence and types of intrahepatic portal venous variations by helical computed tomography performed with arterial portography (CTAP). Methods In 192 patients without evidence of vascular invasion or distortion, CTAP images were reviewed retrospectively to identify portal venous variations. Results Of the 192 patients examined, 10 (5.2%) had trifurcation, 5 (2.6%) had a right posterior segmental branch arising from the main portal vein, 5 (2.6%) had an absence of the horizontal segment of the left portal vein, and 1 (0.5%) had an absence of the left lateral segmental portal branch. Of the patients without a horizontal segment, two had a right-sided ligamentum teres associated with malposition of the gallbladder, while another had complete ramification of intrahepatic portal branches from an umbilical vein-like segment. In the patient missing the left lateral segmental branches, the right portal vein segments were subcapsularly located. Conclusion Variations of the intrahepatic portal veins can be recognized on CTAP imaging.