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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 analyze the MRI features of primary central nervous system lymphoma. Methods: MRI findings of 37 cases of primary central nervous system lymphoma were analyzed retrospectively, including lesion distribution, size, signal characteristics, mass effect and enhancement features. Results: Of the 37 patients with primary central nervous system lymphoma, 24 had single lesions and 13 had multiple lesions. Single lesions were distributed in the hemisphere of the brain in 13 cases, 3 cases of cerebellum, thalamus and saddle area in 2 cases, corpus callosum, third ventricle, jugular foramen and atrium crack in 1 case. T1WI was low or equal signal accounted for 95.8%, T2WI were high signal; except one case did not significantly enhanced enhancement, the other significantly enhanced lesions in the uniform enhancement and uneven enhancement of 50%; with occupying effect accounted for 45.9 %. Conclusion: MRI manifestations of primary central nervous system lymphoma are changing. Clinical manifestations of all kinds of atypical MRI of central nervous system lymphoma should be vigilant.