【摘要】 目的:分析颅内原发性淋巴瘤CT和MRI的影像学表现,旨在提高对该病的诊断与鉴别诊断率。方法:回顾性分析12例经病理证实的颅内原发性淋巴瘤的CT与MRI表现。结果:单发8例,多发4例,共计15个病灶,病理类型均为B细胞型非霍奇金淋巴瘤。CT表现等密度或稍高密度实质性肿块,无钙化,瘤周水肿相对较轻,占位效应轻,增强后瘤体呈均匀性中度强化,无囊变及环形强化。MRI显示为长T1、长T2信号,增强后病灶明显强化。结论:脑内原发淋巴瘤少见,影像学表现与颅内其他肿瘤互相重叠,CT和MRI平扫和增强扫描的应用有助于脑内淋巴瘤的诊断和鉴别诊断。更多还原

【Abstract】 Objective To analyze CT and MRI features of primary intracraniallymphoma,to improve the diagnosis and differentiation of the disease.Methods CT and MRI findings in 12 patients (10 males and 2 females with a median age of 53) with pathologically proved primary brain lymphoma were retrospectively analyzed.Results The lesions weresolitary in 8 cases and multiple in 4 cases.The total 12 patients showed 15 lesions altogether,Pathologically,all lesions were non Hodgkin’s lymphoma of B cell type.On CT scans,the lesions presented as iso-or slightly hyper-density masses without calcifications,mild peritumoral edema and space-occupying effect were seen.After injection of contrast,the tumor showed mild enhancement,and neither cystic degeneration nor ring like enhancement could be seen.On MRI,the lesions displayed long T1 and long T2 signal,which were markedly enhanced after contrast injection.Conclusion Primary brain lymphoma is a rare tumor that imaging findings overlap with those of other intracranial mass lesions.The application of plain and enhanced CT and MRI scanning is helpful for the diagnosis and differential diagnosis of intracerebral lymphoma.更多还原