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目的探讨原发性中枢神经系统淋巴瘤的MRI征象。方法回顾性分析我院2004-01—2005-09经神经外科手术或活检后病理证实的原发性中枢神经系统淋巴瘤44例的MRI表现,包括病灶数目、大小、分布、形态及增强前后MRI信号的表现。44例原发性中枢神经系统淋巴瘤中,男29例,女15例。年龄12~76岁,平均53岁。结果病变部位包括脑部41例,脊髓3例。病灶可单发或多发,MRI平扫T1WI大多呈略低信号,T2WI等信号或高信号;增强后病灶大都均匀实质团块状或结节状强化,少数呈环形强化。结论原发性中枢神经系统淋巴瘤MRI表现有一定特征性。单发或多发病灶明显实质结节状强化,尤其靠近脑脊液腔时,应考虑淋巴瘤可能。
Objective To investigate MRI features of primary central nervous system lymphoma. Methods The MRI findings of 44 patients with primary central nervous system lymphoma confirmed by pathological examination after neurosurgery or biopsy in our hospital from January 2004 to June 2005 were analyzed retrospectively, including the number of lesions, size, distribution, morphology and MRI before and after MRI Signal performance. 44 cases of primary central nervous system lymphoma, 29 males and 15 females. Aged 12 to 76 years old, average 53 years old. Results The lesions included 41 cases of brain and 3 cases of spinal cord. Lesions can be single or multiple, MRI plain T1WI mostly showed a slightly lower signal, T2WI and other signals or high signal; enhanced lesions were mostly homogeneous mass or nodular enhancement, a few were ring-shaped enhancement. Conclusion MRI manifestations of primary CNS have certain characteristics. Solitary or multiple lesions significantly enhanced nodular parenchyma, especially near the cerebrospinal fluid cavity, lymphoma may be considered.