MR增强检查对幕上星形胶质细胞瘤分级的价值  

Value of Contrast-Enhanced MR for Classification of Supratentorial Astroctytic Glioma

作　　者：陈翰高[1] 龙莉玲[1] 李茂[1] 崔惠勤[1] 李文美[1] 

机构地区：[1]广西医科大学第一附院放射科

出　　处：《暨南大学学报（自然科学与医学版）》1998年第6期78-78,共1页Journal of Jinan University(Natural Science & Medicine Edition)

摘　　要：：探讨磁共振增强检查对幕上星形胶质细胞瘤分级的价值及术后肿瘤复发的征象。方法：选择有完整资料并经手术病理证实的２７例进行回顾性研究，观察其ＭＲ平扫及增强表现，并与病理进行对照。结果：平扫均显示病变为长Ｔ１长Ｔ２异常信号，但信号强度不均、边界不清、病灶附近水肿较多，次为病灶内坏死液化。增强扫描中，２０例有增强表现，２例术后肿瘤复发者可见环状或环壁节状增强。ＭＲＩ分级与病理分级对比：病理诊为Ⅰ～Ⅱ级８例，ＭＲＩ诊Ⅰ级２例，Ⅱ级８例；病理诊Ⅱ级１０例，ＭＲＩ诊Ⅰ级２例，Ⅱ级８例；病理诊Ⅱ～Ⅲ级４例，ＭＲ诊Ⅱ级３例，Ⅲ级１例；病理诊Ⅳ级１例，ＭＲ诊Ⅲ～Ⅳ级。Objective: To study the value of contast-enhanced MR for calssification of supratentorial astrocytic glioma and the features of recurrent tumor in postoperation. Material and Methods: 27 pathologically confirmed cases were retropectively studied by analyzing the pre- and postcontrast MR findings and comparing with the pathological stagings. Results: The patients displayed a prolonged T1 and T2 relaxation.Precontrasted images showed imhomogeneous signal intensity,ill-circumscribed mass with surrounding edema and necrosis within the mass.20 patients had contrast enhancement in postcontrasted images.The ring-like or ring-like with mural nodules enhancement was seen in 2 patients with tumor recurrence.Comparing MRI stage(MRIS) with pathological stage (PS) of the tumor,we found that among 8 patients in PS Ⅱ-Ⅲ,there were 3 in MRIS Ⅱ and one in MRIS Ⅲ;one patient in PSIV was in MRIS Ⅲ. Conclusion: This results indicated,that Tumor staging with MRI was comparable with pathological staging.

关 键 词：MRI分级 星形胶管细胞瘤 病理学 

分 类 号：R739.41[医药卫生—肿瘤]