MRI对原发性中枢神经系统淋巴瘤的诊断价值

陈建敏; 祝跃明

文章摘要

陈建敏祝跃明.MRI对原发性中枢神经系统淋巴瘤的诊断价值[J].实用中西医结合临床,2008,(4):72-73

MRI对原发性中枢神经系统淋巴瘤的诊断价值

DOI：

中文关键词: 淋巴瘤中枢神经系统磁共振成像

英文关键词: Lymphoma Central Nervous System Magnetic resonance imaging

基金项目:

作者	单位
陈建敏祝跃明	浙江省德清县人民医院；浙江省湖州市中心医院

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中文摘要:

目的：探讨脑内原发性淋巴瘤的MRI特征，以提高其术前的诊断水平。方法：回顾性分析12例经手术后病理证实的脑内原发性淋巴瘤的MRI表现。结果：所有病例均为弥漫大B细胞淋巴瘤。单发10例，多发2例，共16个病灶，其中幕上12个，幕下4个。圆形或类圆形为主，占位效应轻，轻或中度水肿(75.0%）。在T1WI上呈等或稍低信号，在T2WI上大部分病灶为等或稍高信号，少数病灶为高信号，FLAIR上为等或稍高信号。增强后大部分明显均匀强化，少部分病灶内可见无强化的坏死区。结论：中枢神经系统原发性淋巴瘤的MRI表现具有一定的特征性，结合特定的发病部位和发病年龄，大部分可以获得正确的术前诊断。

英文摘要:

Objective: To explore the MRI characteristics of primary central nervous system lymphoma so as to improve it’s presurgical diagnosis. Methods: The MRI data from 12 primary central nervous system lymphoma confirmed by surgery were retrospectively analyzed. The location, morphology and signals of the lesions were studied. Results: All patients were diagnosed as diffuse large cell lymphoma B cell. A total of 16 lesions were present in 12 patients，2 patients（16.7%) had multiple lesions.12 lesions were located at the supratentoria region, and the other 4 were in the inferior tentorium region. Usually，the lesion was presented as an oval mass with slight peritumoral edema（75.0%）and slight space-occupying effect.On plain MRI scans, all lesions presented as slight hypo- or isointensity on T1WI,and on T2WI and FLAIR images, most lesions were iso- or sligh hyperintensity. Most of the lesions were obviously homogeneous enhanced. Conclusions: The MRI imaging findings of primary central nervous system lymphoma has some specificity, it is possible to give a definite diagnosis after analyzing these imaging manifestation and clinical data carefully.

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