胚胎发育不良性神经上皮瘤的MRI影像特点  

MRI Features of Dysembryoplastic Neuroepithelial Tumor

作　　者：梁雯雯[1] 张雪林[1] 

机构地区：[1]南方医科大学南方医院影像中心,广东广州510515

出　　处：《实用放射学杂志》2009年第12期1710-1712,共3页Journal of Practical Radiology

摘　　要：目的探讨胚胎发育不良性神经七皮瘤（DNT）的MRI成像特点。方法回顾性分析10例经手术后病理证实的DNT的MRI表现，总结肿瘤的特征性表现。结果MR所见：6例表现为“大囊中结节”样，3例以囊性为主，囊内有分隔。肿瘤实性部分呈长T1长T2信号，囊性部分呈更长T1长T2信号，增强扫描表现为壁结节强化或囊内分隔轻度强化。瘤周水肿不明显，无明显占位效应。结论DNT的MRI表现具有一定特征，结合其临床表现，可在术前做出正确的诊断。Objective To investigate MRI features of dysembryoplastic neuroepithelial tumor（DNT）. Methods The MR images of ten cases with surgically and pathologically proved DNT were retrospectively reviewed. Results MR imaging showed cystic component with mural nodule in 6, mainly cystic component with septa in 3. The solid components of the tumors were long T1 and long T2 signal intensity,the cystic components were even longer T1 and T2 signal intensity which resembled the signal of cerebrospinal fluid. Mild enhancement could be found at the intra-tumoral solid nodule or septations after injection of constrast medium but the cystic component did not show any enhancement. No peri-tumoral edema and mass effect were found in most cases. Conclusion DNTs are of some special features on the MR images, the diagnosis can be exactly done before operation if MRI features in combination with clinical data of the patients.

关 键 词：脑 磁共振成像 胚胎发育不良性神经上皮瘤 

分 类 号：R739.41[医药卫生—肿瘤] R445.2[医药卫生—临床医学]