直肠毛细血管扩张症的MRI表现及文献复习  

MRI features and literature review of rectal telangiectasis

作　　者：徐嬿[1] 邱士军[1] 李锷 杨贤卫[1] 冷西 段芙红 XU Yan;QIU Shijun;LI E;YANG Xianwei;LENG Xi;DUAN Fuhong(Department of Imaging,the First Affiliated Hospital of Guangzhou University of Chinese Medicine,Guangzhou 510405,China)

机构地区：[1]广州中医药大学第一附属医院影像科,广东广州510405

出　　处：《实用放射学杂志》2023年第4期593-595,共3页Journal of Practical Radiology

摘　　要：目的探讨直肠毛细血管扩张症的MRI表现。方法回顾性分析经手术病理证实的5例直肠毛细血管扩张症患者的临床及影像资料,总结其MRI特点。结果5例直肠毛细血管扩张症均位于直肠下段,病变区肠黏膜均有不同程度增厚;5例动脉期可见毛细血管丛,肠壁内外见增多、迂曲且相连的血管影;静脉期见病变黏膜明显强化,间杂斑点状血管样强化灶;2例程度严重者表现为直肠周围放射状分布弥漫增粗的血管影。结论直肠毛细血管扩张症的MRI表现具有特征性,可见病变区肠黏膜不同程度增厚及肠壁内外扩张的毛细血管丛,MRI对诊断直肠毛细血管扩张症及评估病变范围具有重要价值。Objective To investigate the MRI features of rectal telangiectasis.Methods The clinical data and MRI images of 5 patients with rectal telangiectasis confirmed by surgery and pathology were analyzed retrospectively,and its MRI features were summarized.Results All 5 cases of rectal telangiectasis were located in the lower segment of the rectum,and thickened mucosa was observed in all the lesion areas.All 5 patients demonstrated hyperplastic,engorged,connected capillaries within and outside the rectal wall in the arterial phase,as well as an enhanced mucosa,with dotted vessel-like enhanced lesions in the venous phase.In 2 severe cases,radial distribution of enlarged vessels at the periphery of the rectum was observed.Conclusion Rectal telangiectasis has distinguishing features on MRI,the thickened mucosa with varying degrees in the lesion areas and the dilated capillary plexus inside and outside the intestinal wall can be seen.MRI has important value in diagnosing rectal telangiectasis and assessing the extent of lesions.

关 键 词：直肠 毛细血管扩张 磁共振成像 

分 类 号：R574[医药卫生—消化系统] R445.2[医药卫生—内科学]