Baba Y, Hokotate H, Nishi H, Inoue H, Nakajo M
Department of Radiology, Faculty of Medicine, Kagoshima University, Japan.
J Comput Assist Tomogr. 2000 Sep-Oct;24(5):802-8. doi: 10.1097/00004728-200009000-00024.
We assessed the prevalence and types of intrahepatic portal venous variations by helical computed tomography performed with arterial portography (CTAP).
In 192 patients without evidence of vascular invasion or distortion, CTAP images were reviewed retrospectively to identify portal venous variations.
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.
Variations of the intrahepatic portal veins can be recognized on CTAP imaging. tomography-Portal vein, computed tomography.
我们通过动脉门静脉造影螺旋计算机断层扫描（CTAP）评估肝内门静脉变异的发生率和类型。
对192例无血管侵犯或变形证据的患者，回顾性分析CTAP图像以确定门静脉变异情况。
在192例接受检查的患者中，10例（5.2%）出现门静脉三叉分支，5例（2.6%）右后段分支起源于门静脉主干，5例（2.6%）左门静脉水平段缺如，1例（0.5%）左外侧段门静脉分支缺如。在左门静脉水平段缺如的患者中，2例伴有右侧圆韧带及胆囊位置异常，另1例肝内门静脉分支由类似脐静脉段完全分支而来。在左外侧段门静脉分支缺如的患者中，右门静脉段位于包膜下。
CTAP成像可识别肝内门静脉变异。断层扫描 - 门静脉，计算机断层扫描。
