胼胝体压部可逆性孤立性病变的MRI诊断与鉴别诊断  

MRI Differential Diagnosis of Reversible Lesion in Splenium of Corpus Callosum

作　　者：陈耿[1] 韩立新[1] 曹惠霞[1] 王俊[1] 杜渭清[1] 崔静[1] 莫树群[1] 

机构地区：[1]广州军区广州总医院磁共振室,510010

出　　处：《临床放射学杂志》2012年第9期1229-1232,共4页Journal of Clinical Radiology

摘　　要：目的分析胼胝体压部可逆性孤立性病变的MRI表现。方法对13例胼胝体压部可逆性孤立性病变患者的临床表现、影像学资料及部分患者的随访结果进行回顾性分析。结果本组患者年龄均偏年轻,无明确酒精中毒或长期酗酒史,临床上有一定特征性的病史,与临床常见的由于酒精中毒引起的胼胝体变性明显不同。胼胝体压部可逆性孤立性病变的MRI表现为:胼胝体压部类圆形、边界清楚的孤立结节,T2WI序列呈稍高信号,液体衰减反转恢复(FLAIR)及扩散加权成像(DWI)序列呈高信号而相应表观扩散系数(ADC)序列呈低信号,增强扫描病灶未见明显强化;与胼胝体变性主要发生于胼胝体体部及膝部且呈对称性不同。结论胼胝体压部可逆性孤立性病变MRI表现有一定的特征性,MRI对其诊断、鉴别诊断及为临床治疗提供依据具有很大价值。Objective To investigate MRI findings of patients with reversible lesion in the splenium of corpus callosum. Methods Clinical manifestations and imaging findings of 13 patients with reversible lesion in the splenium of corpus callosum lesions were retrospectively analyzed. Results The patients trended to younger age without obviously long term alcoholism or alcohol history, which was significantly different from MBD caused by alcoholism commonly in clinical. MRI findings of patients with reversible lesion in the splenium of corpus callosum included ： focal round or oval lesion located in corpus callosum with clear boundary, slightly hyperintensity on T2WI sequence, hyperintensity on FLAIR and DWI sequences and hypointensity in the corresponding ADC images, no obviously enhanced could be seen. The MBD located mainly in the body and knee of corpus callosum symmetrically. Conclusion There are certain MRI characteristic findings of reversible lesion in the splenium of corpus callosum, MRI has great values in differential diagnosis and provide a reference for clinical treatment of reversible lesion in the splenium of corpus callosum.

关 键 词：胼胝体 圧部 可逆性 孤立性 磁共振成像 

分 类 号：R445.2[医药卫生—影像医学与核医学]