原发性中枢神经系统淋巴瘤37例的MRI表现分析  

Anaysis of MRI manifestations of 37 cases of primary central nervous system lymphoma

作　　者：黄波[1] 陈字 初曙光[2] 谢彦晖[1] 许小平[1] 谢毅[1] 林果为[1] 

机构地区：[1]复旦大学附属华山医院血液科,上海200040 [2]复旦大学附属华山医院放射科,上海200040

出　　处：《肿瘤》2008年第7期617-619,共3页Tumor

摘　　要：目的:分析原发性中枢神经系统淋巴瘤的MRI表现。方法:回顾性分析37例原发性中枢神经系统淋巴瘤的MRI表现,包括病灶分布、大小、信号特点、占位效应及强化特征。结果:37例原发性中枢神经系统淋巴瘤中,单发病灶24例,多发病灶13例。单发病灶分布于大脑半球13例、小脑3例、丘脑及鞍区各2例,胼胝体、三脑室、颈静脉孔区及天幕裂孔区各1例。T1WI呈低或等信号占95.8%,T2WI均呈高信号;除1例增强后不明显强化外,其余明显强化病灶中均匀强化及不均匀强化者各占50%;有占位效应者占45.9%。结论:原发性中枢神经系统淋巴瘤MRI表现多变,临床需警惕原发性中枢神经系统淋巴瘤的各种不典型MRI表现。Objective ： To study the MRI manifestations of primary central nervous system lymphoma. Methods ： MRI features of 37 patients with pathologically proved primary central nervous system lymphoma were retrospectively analyzed in the location, size, signal, space-occupying effect and enhanced features. Results： On MRI, single lesions were found in 24 cases and multiple ones in 13 ca- ses. Among the single lesion cases, 13 lesions were located in the cerebral hemispheres, 3 lesions in the cerebellum, 2 lesions in the thalamus and saddle area, respectively. There was 1 lesion in the corpus callosum, the third ventricle, the jugular foramen, and the tentorial notch region, respectively. 95.8% lesions showed hypointense or isointense signal on T1WI. All lesions showed hyperintense signal on T2WI. Marked enhancement was seen in 36 cases after Gd-DTPA administration except 1 patient. Half of them were homogenous. About 45.9% cases had space-occupying effect. Conclusion： Primay central nervous system lymphoma had various MRI features and more attention should be paid to the atypical MRI manifestations.

关 键 词：淋巴瘤 中枢神经系统 磁共振成像 

分 类 号：R733[医药卫生—肿瘤] R445.2[医药卫生—临床医学]