脑内原发性恶性淋巴瘤的MRI诊断  

MR Imaging Diagnosis of Primary Malignant Lymphomas in the Brain

作　　者：邱士军[1] 张雪林[1] 昌仁民[1] 

机构地区：[1]广州第一军医大学南方医院影像中心,广东广州510515

出　　处：《中国医学影像技术》2002年第9期870-871,共2页Chinese Journal of Medical Imaging Technology

摘　　要：目的　探讨MRI对原发性脑内恶性淋巴瘤的诊断价值。方法　回顾性分析 8例经手术和病理证实的脑内恶性淋巴瘤患者的MR表现。结果　MRI表现为 :①T1WI呈等或稍低信号灶 ,T2 WI为等或稍高信号 ,多数肿瘤轻至中度水肿和占位效应 ;②Gd DTPA增强扫描肿瘤呈均匀或不均匀强化。结论　MRI的多轴位成像及Gd DTPA应用有助于脑内恶性淋巴瘤的诊断与鉴别诊断并有助于减少误诊。Objective To investigate the role of MRI in diagnosis of primary malignant lymphomas in the brain.Methods Eight cases of primary malignant lymphomas in the brain proved by operation and pathology were examined by MRI before operation.MRI features were analysed retrospectively.Results The MRI appearances were as following:①On T 1WI,the lesions were isointense or slightly hypointense while isointense or slightly hyperintense on T 2WI.Most lymphomas in the brain showed minimal or moderate edema and mass effect; ②Homogeneous or inhomogeneous Gd DTPA enhancement presented in most of the tumors.Conclusion Multiplanar imaging and Gd DTPA enhancement in MRI are helpful in diagnosis and differential diagnosis of primary malignant lymphomas in the brain.Therefore,misdiagnosis could be decreased.

关 键 词：脑内原发性恶性淋巴瘤 淋巴瘤 磁共振成像 诊断 颅内肿瘤 MR表现 

分 类 号：R739.410.4[医药卫生—肿瘤]