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Abstract

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Purpose : To determine the prevalence of variations in the intrahepatic portions of
portal veins, as visualized by arterial portograms, and to examine the surgical
implication of these findings in Koreans.
Materials arid Methods : Five hundred and nineteen arterial portoarams of 519 patients
with no evidence of vascular tumor invasion or distortion were retrospectively reviewed.
In all patients, the main, right, right anterior, right posterior and left portal vein were
visualized.
Results : Variations in intrahepatic portal anatomy were found in 102 patients(19.6%)
and involved an immediate trifurcation of the main portal vein in 82(15.8%) a right
posterior segment form the main portal vein in ten(1.9%), a right anterior segment from
the left portal vein in nine(1.7%) and an absent horizontal portion from the left portal
vein in one(0.2%).
Conclusion : On arterial portogram, variations in the intrahepatic portions of the portal
veins are frequently seen. The recognition of such variations is important in the
preoperative evaluation of patients with hepatic tumors, since the variations may have
implications for tumor resection, for the localization of tumor thrombi and in
interventional radiologic procedures involving the portal the localization of tumor thrombi
and in interventional radiologic procedures involving the portal vein

Å°¿öµå

Liver; angiography; Portal vein; anatomy;

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KoreaMed
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