Hepatic pseudolesions caused by alterations in intrahepatic hemodynamics  

作　　者：Satoshi Kobayashi 

机构地区：[1]Department of Quantum Medical Technology,Kanazawa University Graduate School of Medical Sciences,Kanazawa 9200942,Ishikawa,Japan

出　　处：《World Journal of Gastroenterology》2021年第46期7894-7908,共15页世界胃肠病学杂志（英文版）

摘　　要：Hepatic pseudolesion may occur in contrast-enhanced computed tomography and magnetic resonance imaging due to the unique haemodynamic characteristics of the liver.The concept of hepatic arterial buffer response(HABR)has become mainstream for the understanding of the mechanism of the reciprocal effect between hepatic arterial and portal venous flow.And HABR is thought to be significantly related to the occurrence of the abnormal imaging findings on arterial phase of contrast enhanced images,such as hepatic arterial-portal vein shunt and transient hepatic attenuation difference,which mimic hypervascular tumor and may cause clinical problems.Third inflow to the liver also cause hepatic pseudolesion,and some of the cases may show histopathologic change such as focal hyperplasia,focal fatty liver,and focal sparing of fatty liver,and called pseudotumor.To understand these phenomena might be valuable for interpreting the liver imaging findings.

关 键 词：Pseudolesion Focal sparing of fatty liver Computed tomography Hepatic blood flow Hepatic hemodynamics Hyperplastic change 

分 类 号：R575[医药卫生—消化系统]