儿童肠炎所致轻微脑炎伴胼胝体压部可逆性病变的MRI分析  

MRI features of pediatric enteritis-induced mild encephalitis with a reversible splenial lesion

作　　者：李光民[1] 李素荣[1] 李静[1] 王俊卓[1] 齐福新[1] 吴晓辉 梅国勋[1] LI Guang-min;LI Su-rong;LI Jing;WANG Jun-zhuo;QI Fu-xin;WU Xiao-hui;MEI Guo-xun(Department of Radiology,Maternal and Child Health Hospital of Tangshan,Hebei 063000,China)

机构地区：[1]唐山市妇幼保健院放射科,河北唐山063000

出　　处：《影像诊断与介入放射学》2020年第5期338-342,共5页Diagnostic Imaging & Interventional Radiology

基　　金：河北省卫生健康委医学科学研究课题(20191546)。

摘　　要：目的探讨肠炎引起儿童胼胝体压部可逆性病变的MRI影像特点。方法回顾性分析35例肠炎患儿疾病诊治过程中所致轻微脑炎/脑病伴可逆性胼胝体压部病变的MRI表现,尤其是DWI影像特点及ADC值的变化。结果35例患儿颅脑MRI影像,胼胝体压部均有异常信号,呈圆形或椭圆形,T1WI呈稍低或等信号,T2WI呈稍高信号,FLAIR呈高信号,DWI(b值=1000)扩散受限,ADC为低信号。其中MERSⅠ型34例,Ⅱ型1例(除胼胝体压部病变外,另外脑白质部分表现为异常),经治疗4~11 d临床症状消失,DWI信号恢复正常。结论儿童肠炎可导致轻微脑炎/脑病伴可逆性胼胝体压部病变,经合理治疗,可完全恢复正常。Objective To investigate the MRI features of mild encephalitis with a reversible splenial lesion( MERS) in children with enteritis. Methods Brain MRI of 35 children with enteritis-induced MERS type Ⅰ(34) and type Ⅱ(1) was reviewed.Results In all 35 children, the lesions in the splenium of corpus callosum were round or oval, slightly hypo-or isointense on T1-,slightly hyperintense on T2-, and hyperintense on T2 FLAIR-weighted images with high signal intensity on diffusion-weighted images(DWI, b =1000) and reduced apparent diffusion coefficient. The child with MERS type Ⅱ had involvement of the cerebral white matter as well. After 4-11 days of treatment, the symptoms resolved with normal signal intensities on DWI. Conclusion DWI is useful for diagnosis and follow-up of enteritis-induced MERS in children.

关 键 词：儿童 肠炎 胼胝体压部可逆性病变 扩散加权成像 

分 类 号：R445.2[医药卫生—影像医学与核医学] R725.7[医药卫生—诊断学] R742[医药卫生—临床医学]