摘要
目的分析脑膜转移瘤的MRI表现特点,探讨MRI对脑膜转移瘤的诊断价值。方法回顾性分析经手术、病理或脑脊液检查证实的脑膜转移瘤64例。所有病例均行脑MRI平扫和增强扫描。结果①MRI平扫:发现脑膜异常改变15例。硬脑膜型9例,其中结节型5例,线状增厚型3例,混合型1例;软脑膜型6例,均为结节型。②MRI增强:64例脑膜转移瘤有3种表现形式:硬脑膜型36例,其中结节型9例,线状增厚型21例,混合型6例;软脑膜型20例,其中结节型10例,线状增厚型7例,混合型3例;全脑膜型8例,其中结节型1例,线状增厚型1例,混合型6例。③其他表现:64例中49例伴脑内转移,12例伴脑积水,6例伴颅骨转移,2例伴皮下转移。结论MRI是脑膜转移瘤的重要检查方法,增强MRI对诊断脑膜转移瘤更具有价值。
Objective To analyze the features of MRI manifestation and investigate the value of MRI in diagnosis of meningeal carcinomatosis. Methods Sixty-four cases with meningeal carcinomatosis confirmed by operation and pathology or CSF study were retrospectively analyzed. All cases were examined by plain and contrast MRI. Results （1）Plain MRI： abnormal mater changes were found in 15 cases. Dural pattern in 9 cases, including 5 nodular type, 3 linear meningeal thicken type and 1 mixed type. Pia pattern in 6 cases were all nodular type. （2）Contrast MRI： 64 cases showed three kinds of manifestation patterns. Dural pattern in 36 cases, including 9 nodular type, 21 linear meningeal thicken type and 6 mixed type. Pia pattern in 20 cases, including 10 nodular type, 7 linear meningeal thicken type and 3 mixed type. Total meninges pattern in 8 cases, including 1 nodular type, 1 linear meningeal thicken type and 6 mixed type. （3）Other findings： intracerebral metastases in 49 cases, hydrocephalus in 12 cases, skull metastases in 6 cases and subcutaneous metastasis in 2 cases were found in 64 cases. Conclusion MRI is an important examination method for meningeal carcinomatosis. Post-contrast MRI is better than precontrast MRI in diagnosis of meningeal carcinomatosis.
出处
《中国医学影像技术》
CSCD
北大核心
2007年第9期1292-1295,共4页
Chinese Journal of Medical Imaging Technology
关键词
脑膜
转移瘤
磁共振成像
Meninges
Carcinomatosis
Magnetic resonance imaging
