脑原发性淋巴瘤的CT、MRI诊断  

CT、MRI Diagnosis of Primary Brain Iymphoma

作　　者：邵永良 金中高[2] 周林江[3] 

机构地区：[1]浙江省湖州市第三医院,313000 [2]浙江省湖州市中心医院放射科,313000 [3]复旦大学附属华山医院放射科,上海200040

出　　处：《中国医学影像学杂志》2007年第4期250-252,共3页Chinese Journal of Medical Imaging

摘　　要：目的:探讨脑原发性淋巴瘤的CT、MRI特征,以提高诊断水平。材料和方法:回顾性分析经病理证实的20例脑原发性淋巴瘤的CT和MRI表现。结果:20例共52个病灶,其中脑干4个、基底节14个、丘脑1个、胼胝体8个、枕叶10个、顶叶5个、颞叶5个、额叶4个、硬脑膜1个。位于脑深部近中线区域占78.8%;形态不规则(71.2%),内部发现囊变(15.4%),均未见钙化、出血。CT平扫均呈等或略高密度。T1WI呈低信号(30.7%)等信号(63.5%),T2WI等信号(69.3%),高信号(26.9%),增强后均呈显著增强。周围水肿(84.6%)。结论:脑原发性淋巴瘤的CT、MRI表现有一定特点,熟悉其临床及表现特点有助于对本病作出正确的诊断。Purpose： To discuss CT,MRI features of primary brain Iymphoma. Materials and Methods： 20 cases of primary brain Iymphoma proved by operation and pathology were examined by CT and MRI. The CT and MRI features were analyzed retrospectively. Results： There were 52 lesions in 20 patients. 4 tumors were found in brain stem, 14 in base ganglia, 1 in thalamus ,8 in corpus callosum, 10 in occipital lobe,5 in parietal lobe,5 in temporal lobe,4 in frontal lobe, and 1 in dura mater. The tumor might be single or multiple lesions, irregular in shape （71.2% ）, cystic change （15.4%）. The lesions appeared as isodensity or slightly density on CT, on T1 W1,30.7 % of lesions were signal hypointense and 63.5% isointense, on T2W1,69, 3% of lesions were isointense and 26.9% were hyperintense. All lesions appeared as marked uniform enhancement. 84.6% of primary brain lymphoma had edema. Conclusion： Primary brain lymphoma has some CT and MRI features, to master those is useful in diagnosis of this dieases.

关 键 词：淋巴瘤 原发 脑 CT MRI 

分 类 号：R730.44[医药卫生—肿瘤]