【摘要】 目的:探讨免疫功能正常人原发性中枢神经系统淋巴瘤(PCNSL)的常规MRI表现。资料与方法:对21例经手术病理证实的PCNSL的MRI表现进行回顾分析,其中男14例,女7例,平均年龄49.6岁。结果:21例患者共检出30个病灶,其MRI表现具有如下特点:①病灶T1WI多呈低或等信号,T2WI呈等或稍高信号,单发或多发,境界清晰。②轻中度瘤周水肿,并可见“火焰样”特征性水肿。③增强后病灶多明显均匀强化;“缺口征”、“尖角征”的出现具有特异性。结论:传统MRI在PCNSL的诊断中起着重要的作用。更多还原

【Abstract】 Objective:To analyse MRI findings of primary central nervous system lymphoma(PCNSL)in immunocompetent patients.Materials and Methods:MRI findings in 21 patients with pathologically proved PCNSL were analyzed retrospectively,14 male and 7 female,mean age,49.6 years old.Results:Thirty lesions were identified in 21 patients.The MRI findings of PCNSL were as follows:①hypo-or iso-intense on T1WI and iso-or slightly hyper-intense on T2WI,solitary or multiple well-defined lesions;②slight or moderate peritumoral edema,and characteristic flame-like edema;③enhancement is intense and homogeneous,the presence of “incision sign” and “angular sign” are more specific.Conclusion:Conventional MRI plays an important role in the diagnosis of PCNSL.更多还原