摘要
目的：探讨免疫功能正常人原发性中枢神经系统淋巴瘤（PCNSL）的常规MRI表现。资料与方法：对21例经手术病理证实的PCNSL的MRI表现进行回顾分析，其中男14例，女7例，平均年龄49.6岁。结果：21例患者共检出30个病灶，其MRI表现具有如下特点：①病灶T1WI多呈低或等信号，T2WI呈等或稍高信号，单发或多发，境界清晰。②轻中度瘤周水肿，并可见“火焰样”特征性水肿。③增强后病灶多明显均匀强化；“缺口征”、“尖角征”的出现具有特异性。结论：传统MRI在PCNSL的诊断中起着重要的作用。
Abstract
Objective: To analyse MRI findings of primary central nervous system lymphoma(PCNSL) in immunocompetent patients. Materials and Methods: MRI findings in 21 patients with pathologically proved PCNSL were analyzed retrospectively, 14 male and 7 female, mean age, 49.6 years old. Results: Thirty lesions were identified in 21 patients. The MRI findings of PCNSL were as follows: ①hypo- or iso-intense on T1WI and iso- or slightly hyper-intense on T2WI, solitary or multiple well-defined lesions; ②slight or moderate peritumoral edema, and characteristic flame-like edema; ③enhancement is intense and homogeneous, the presence of “incision sign” and “angular sign” are more specific. Conclusion: Conventional MRI plays an important role in the diagnosis of PCNSL.
关键词
中枢神经系统肿瘤 /
淋巴瘤 /
磁共振成像
Key words
central nervous system neoplasms /
lymphoma /
magnetic resonance imaging
杨子江;汪 林.
原发性中枢神经系统淋巴瘤的MRI[J]. 中国临床医学影像杂志. 2007, 18(6): 387-389
YANG Zi-jiang;WANG Lin.
MRI characteristics of primary central nervous system lymphomas[J]. Journal of China Clinic Medical Imaging. 2007, 18(6): 387-389
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