多发原发性中枢神经系统淋巴瘤MRI诊断  

MRI Features of Multiple Primary Central Nervous System Lymphomas

作　　者：黄丽霞[1] 许乙凯[1] 赵茜茜[1] 刘香[1] 

机构地区：[1]南方医科大学南方医院影像中心,广州510515

出　　处：《临床放射学杂志》2013年第4期476-479,共4页Journal of Clinical Radiology

摘　　要：目的探讨多发原发性中枢神经系统淋巴瘤(MPCNSLs)的MRI特征及鉴别诊断要点。方法回顾性分析7例经病理证实的MPCNSLs的MRI表现,其中男4例,女3例,平均年龄44岁。结果 7例共21个病灶(每例发现2～5个病灶),病灶平均大小为(2.99±1.25)cm;T1WI上几乎均呈低信号(20个病灶);T2WI上表现为高信号或混杂等高信号;液体衰减反转恢复序列上表现为高、等信号;增强扫描仅有1例(1个病灶)无强化,其余均可见不同程度及不同方式强化。结论 MPCNSLs常规MRI平扫与增强影像表现有一定的特征性,结合脑内多发特点可以做出较准确的诊断,为临床治疗提供帮助。Objective To describe the MR imaging features of multiple primary central nervous system lymphomas （MPCNSLs） and to improve the differential diagnosis. Methods MR imagings of 7 patients （4 male, 3 female, mean age of 44- year- old） with MPCNSLs confirmed by pathology were analyzed retrospectively. Results A total of 21 lesions were found in 7 patients with 2 - 5 tumors found in each patient. The mean lesion size was （ 2.99 ± 1.25 ） cm. The lesions showed hypointense on T1WI, hyperintense or mixed iso/hyperintense on T2WI. and hyperintese or isointanse on Flair images. All lesions except one showed enhancement after contrast material administration. Conclusion There are some characteristic of MPCNSLs on conventional MR imaging. Therefore , MR can help to make diagnosis and offer assis- tance for clinical treatment.

关 键 词：脑肿瘤 淋巴瘤 磁共振成像 

分 类 号：R739.4[医药卫生—肿瘤]