原发性颅脑淋巴瘤MR诊断征象分析

MR diagnosis of primary brain lymphoma

目的分析PCNSL的MRI表现征象,提高诊断正确率。方法回顾性分析我院经病理及免疫组化确诊的PCNSL患者23例,分析总结各病例的发病部位、病灶数量、增强前后信号改变及部分较特异的征象。结果 23例中单发病灶8例,单部位多发病灶3例,多部位多发病灶10例,脑室型及脑膜型各1例;各病例T2WI均呈高或稍高信号,增强呈较明显均匀或不均匀强化,水肿程度不一,部分病例出现较特异的缺口征或蝶翼征。结论 PCNSL的MRI表现具有一定特征性,可为临床诊断与确定治疗方案提供依据。

Objective To analyze the MRI features of PCNSL in order to improve the diagnostic accuracy.Methods A retrospective analysis of 23 cases of PCNSL confirmed by pathology and immunohistochemistry in our hospital was made. The location of the lesion,the number of lesions,the signalchanges before and after enhancement and some of the more specific signs were analyzed and summarized.Results Among the 23 cases,8 cases with single lesion,3 cases of single site multiple lesions,multiple lesions in10 cases,ventricular type and meningeal type in 1 cases;all cases T2 WI showed high or slightly high signal enhancement is obvious homogeneous or heterogeneous enhancement,edema degree,appeared in some cases a specific gap or butterfly sign.Conclusion The MRI manifestations of PCNSL have certain characteristics,which can provide the basis for clinical diagnosis and treatment.