摘要
目的 :探讨脑星形胶质细胞瘤病理分级和MRI影象学表现之间的关系。方法 :回顾性分析 81例经手术和病理证实为脑星形胶质细胞瘤MRI资料 ,综合分析MRI表现并与病理结果对照。结果 :Ⅰ级星形胶质细胞瘤肿瘤信号均匀、占位效应较轻 ,无瘤内血管及出血 ,增强程度较轻、也较均匀 ( 77.7% ) ;Ⅲ～Ⅳ级星形胶质细胞瘤肿瘤信号不均匀、占位效应明显 ,瘤内血管 ( 5 6.67% )及出血 ( 3 3 .3 3 % )多见 ,呈不均匀明显强化 ;Ⅱ级星形胶质细胞瘤介于两者之间。结论 :MRI显示瘤内血管对定性有帮助 ;不同分级的星形胶质细胞瘤具有一定的MRI特征性 ,术前有可能作出推测性诊断。
Objective:To discuss the relationship between the MRI findings and pathological grading of the brain astroglioma. Methods: The MRI findings of 81 cases with brain astroglioma were retrospectively reviewed in comparison with operation and pathology.Results:In grade I,the tumor showed homogeneous signal intensity,mild edema and slight mass effect,there was no vessel and hemorrhage within the lesion.On enhanced MRI,the tumor was enhanced slightly and homogenously.In grade Ⅲ Ⅳ, the tumor showed heterogeneous signal intensity,marked mass effect and edema.The vessels and hemorrhage within tumor were demonstrated in 56.67% and 33.33% respectively.The tumor was enhanced strongly and heterogeneously after administration of contrast medium.In grade Ⅱ,the MR findings were between that of the grade Ⅰ and grade Ⅲ Ⅳ.Conclusions:The MRI findings of various graded astroglioma are of some speciality in the diagnosis.Moreover,the vessels within the tumor shown on MRI can help define the grading of the brain astroglioma.
出处
《放射学实践》
2000年第4期278-281,共4页
Radiologic Practice
