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原发性中枢神经系统淋巴瘤的MRI诊断

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摘要 目的探讨原发性中枢神经系统淋巴瘤(PCNSL)的MRI表现及其临床特征,提高对该病的术前准确诊断。方法回顾性分析经病理证实的14例PCNSL的MRI表现及其临床相关资料。结果 14例PSNSL患者中单发肿瘤10例,多发肿瘤4例,共25个病灶,其中幕上病灶23个,幕下病灶2个。大多数病灶平扫T1WI呈等或低信号,T2WI呈等或稍高信号,DWI呈均匀高信号,增强扫描大部分病灶呈团块状或结节状明显强化,典型的病灶可出现"尖角征"、"蝴蝶征"及"缺口征";肿瘤好发于大脑半球、脑室周围、基底节及胼胝体区。临床表现多样,主要症状为高颅压、肢体偏瘫及麻痹、视觉障碍等颅内占位性表现。结论 PCNSL的MRI表现具有一定的特征性,但缺乏特异性,确诊有赖于病理,MRI扫描有助于对该病的诊断,为临床治疗提供指导。
出处 《中国医药指南》 2011年第36期115-116,共2页 Guide of China Medicine
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