肝内门静脉周围间隙增宽的CT诊断及临床意义

目的探讨肝内门静脉间隙增宽的CT表现及其常见相关疾病。方法回顾性分析16例肝内门静脉间隙增宽患者的CT及临床资料,总结门静脉间隙增宽的CT表现、分布特点及相关基础疾病类型。结果肝内门静脉间隙增宽表现为增强扫描门脉期门静脉左右支及其分支周围低密度影,肝左叶及右叶门静脉后支周围表现为"轨道征",右叶门静脉前支周围表现为"晕环征"。16例门静脉间隙增宽中慢性活动性肝炎6例,心功能不全5例,外伤2例,晚期胃癌化疗后1例,骨髓移植术后1例,尿毒症1例。结论肝内门静脉间隙增宽可见于多种疾病,其表现及分布特点具有特征性,是一种重要的CT征象。

CT findings and clinical significance of intrahepatic periportal space enlargement

Objective To investigate the CT findings of intrahepatic periportal space enlargement and its related pathologies.Methods The CT images and clinical data of 16 patients with intrahepatic periportal space enlargement were retrospectively analyzed,and to study the CT features,distribution pattern,related pathologies of intrahepatic periportal space enlargement.Results Intrahepatic periportal space enlargement demonstrated as hypodensity around the left and right potal vein and branches in portal phase CT images after contrast administration.It appeared as track sign in left hepatic lobe and posterior right lobe and halo sign in anterior right lobe.Sixteen patients with periportal space enlargement in this study included 6 cases of chronic active hepatitis,five cases of heart failure,two cases with trauma,one patients after chemotherapy for a stomach carcinoma in advanced stage,one patient with bone marrow transplantation and 1 case of uremia.Conclusion Intrahepatic periportal space enlargement can be found in several pathologies,and its manifestation and distribution pattern have characteristics,it is a significant sign on CT imaging.