医学影像学杂志
醫學影像學雜誌
의학영상학잡지
JOURNAL OF MEDICAL IMAGING
2014年
7期
1111-1115
,共5页
聂玫%陈自谦%肖慧%夏加林
聶玫%陳自謙%肖慧%夏加林
섭매%진자겸%초혜%하가림
胚胎发育不良性神经上皮肿瘤%磁共振成像
胚胎髮育不良性神經上皮腫瘤%磁共振成像
배태발육불량성신경상피종류%자공진성상
Dysembryoplastic neuroepithelial tumor%Magnetic resonance imaging
目的:总结8例胚胎发育不良性神经上皮肿瘤(DNET)的MRI表现,以提高对此病的认识。方法回顾性分析经手术病理证实的8例DNET ,总结其影像特点。结果8例肿瘤累及脑皮层,边界清楚,无瘤周水肿及占位效应,位于颞叶4例,枕叶2例,额叶1例,小脑1例。5例具“三角征”,4例具“分隔征”,3例呈单或多囊性。肿瘤T1 WI呈低信号,T2 WI呈高信号,增强后4例无强化,4例呈线状、分隔状、小结节状强化。7例 FLAIR像可见肿瘤周边稍高信号“环征”。结论 DNET的MRI表现有一定特征性,MRI对于肿瘤的术前准确诊断有重要意义。
目的:總結8例胚胎髮育不良性神經上皮腫瘤(DNET)的MRI錶現,以提高對此病的認識。方法迴顧性分析經手術病理證實的8例DNET ,總結其影像特點。結果8例腫瘤纍及腦皮層,邊界清楚,無瘤週水腫及佔位效應,位于顳葉4例,枕葉2例,額葉1例,小腦1例。5例具“三角徵”,4例具“分隔徵”,3例呈單或多囊性。腫瘤T1 WI呈低信號,T2 WI呈高信號,增彊後4例無彊化,4例呈線狀、分隔狀、小結節狀彊化。7例 FLAIR像可見腫瘤週邊稍高信號“環徵”。結論 DNET的MRI錶現有一定特徵性,MRI對于腫瘤的術前準確診斷有重要意義。
목적:총결8례배태발육불량성신경상피종류(DNET)적MRI표현,이제고대차병적인식。방법회고성분석경수술병리증실적8례DNET ,총결기영상특점。결과8례종류루급뇌피층,변계청초,무류주수종급점위효응,위우섭협4례,침협2례,액협1례,소뇌1례。5례구“삼각정”,4례구“분격정”,3례정단혹다낭성。종류T1 WI정저신호,T2 WI정고신호,증강후4례무강화,4례정선상、분격상、소결절상강화。7례 FLAIR상가견종류주변초고신호“배정”。결론 DNET적MRI표현유일정특정성,MRI대우종류적술전준학진단유중요의의。
Objective To summarize the MRI manifestations of eight cases of dysembryoplastic neuroepithelial tumors (DNET) so as to improve awareness of the disease .Methods We retrospectively analyzed eight cases of DNET ,which were confirmed pathologically and summarized their imaging characteristics .Results 8 cases of DNET were involved the cerebral cortex ,which presented with clear boundary and were devoided of peritumoral edema or mass effectiveness .Of these 8 cases ,4 cases were locted in the temporal lobe ,2 cases in occipital lobe ,1 case in frontal lobe ,and 1 case in cere-bellum .5 cases presented with the "triangle sign",4 cases had "separated"sign ,and 3 cases were shown to be a single or multiple cystic .Tumors were hypointensity on T1WI and hyperintensity on T2WI .After contrast enhancement ,4 cases were shown no enhancement ,4 cases were shown to be linear ,separated shape ,and small nodular enhancement .On T2-FLAIR ,7 cases appeared visible signal "ring sign"in the tumor periphery .Conclusion The MRI findings of DNET have certain characteristics of imaging findings ,which are important for accurate diagnosis of tumors before surgery .