室管膜下巨细胞星形细胞瘤的CT和MRI表现  

CT and MRI Manifestations of Subepengdymal Giant Cell Astrocytoma

作　　者：辜虎臣[1] 杨宏伟[1] 王刚[1] 

机构地区：[1]仙桃市第一人民医院放射科,湖北433000

出　　处：《放射学实践》2007年第9期919-921,共3页Radiologic Practice

摘　　要：目的:探讨室管膜下巨细胞星形细胞瘤(SGCA)的CT和MRI表现,评价CT和MRI对该病的诊断价值。方法:回顾性分析经手术和病理证实的7例SGCA的CT和MRI表现。7例均行CT检查,3例行MRI检查。结果:7例SGCA均位于室间孔附近,突向脑室,形态不规则。CT表现为不均匀密度肿块,周边可见高密度钙化结节,MRI平扫示肿瘤信号不均匀,T1WI为等或稍低信号,T2WI为等或稍高信号,增强扫描,肿瘤呈不均匀强化。7例均可见多发室管膜下结节,1例见皮层下钙化结节。结论:SGCA的CT和MRI表现有一定的特征,结合CT和MRI可明确对该病的诊断。Objective：To explore the CT and MRI manifestations of subepengdymal giant cell astroeytoma （SGCA） and access the diagnostic value of CT and MRI. Methods：CT and MRI findings in 7 patients with pathologically proved of SGCA were retrospectively analyzed,CT scanning were performed in all 7 patients and MRI in 3. Results：7 eases of SGCA were located in the vicinity of the foramen of monro with irregular appearance,CT showed uniform density masses and high density calcification in the perimeter of masses. MRI showed iso or hypoidentensity on T1WI and iso or hyperintensity on T2WI,SGCA were markedly heterogeneous enhancement. Subependymal nodules were seen in all 7 patients and 1 subeortexial nodule was found. Conclusion：The CT and MRI findings of subependymal giant cell astroeytoma are characteristic,it is helpful in identifying the diagnosis of SGCA to combine with CT and MRI.

关 键 词：室管膜瘤 体层摄影术 X线计算机 磁共振戍像 

分 类 号：R739.4[医药卫生—肿瘤]