Hepatic perfusion disorders: Etiopathogenesis and related diseases

作     者：Jin-Lin Tian Jin-Shan Zhang 

作者机构：Department of RadiologyChinese PLA General Hospital Beijing 100853 China 

出 版 物：《World Journal of Gastroenterology》 (世界胃肠病学杂志（英文版）)

年 卷 期：2006年第12卷第20期

页      面：3265-3270页

核心收录：

学科分类：1002[医学-临床医学] 100201[医学-内科学(含：心血管病、血液病、呼吸系病、消化系病、内分泌与代谢病、肾病、风湿病、传染病)] 10[医学] 

主　　题：Etiopathogenesis Hepatic perfusion disorders Diseases 

摘      要：In this article, we have reviewed the hepatic perfusion disorder （HPD）, etiopathogenesis of HPD and corresponding diseases. Review of the literature was based on computer searches （PubMed, Index Medicus） and personal experiences. We considered HPD reflects perfusion differences due to redistribution of arterial blood flow among segments, subsegments and lobes of the liver. The plain CT scan findings of HPD manifests as triangular or wedge-shaped areas of low attenuation. On contrast-enhanced CT scan, HPD manifests multiple （or single） transient wedge-shaped, rotundloid or irregular appearance, homogeneous hyperattenuation （in less cases, hypoattenuation） during the hepatic arterial phase （HAP） and isoattenuated or slightly hyperattenuated areas during the portal arterial phase. Dynamic enhanced magnetic resonance （MR） features are similar to enhanced CT scan. Angiographic findings include non-opacification of portal vein on portograms or wedge-shaped segmental staining in arterial and parenchymal phases on hepatic angiograms. The causes of HPD are arterioportal shunts （APS）, intrahepatic vascular compressions and portal vein occlusion, steal phenomenon by hypervascular tumors, vascular variations and any other unknown reasons. It is very important for radiologists to be familiar with the various appearances of HPD to avoid false-positive diagnosis of pseudolesions and not to overestimate the extent of the disease.