摘要
目的:探讨胚胎发育不良性神经上皮肿瘤(DNET)MRI特征表现。方法:回顾分析7例经手术证实为DNET的MRI资料,总结DNET的MRI特征表现。结果:7例患者的肿瘤均在皮层或以皮层为主,病灶呈三角型,假囊肿样,T1WI呈低信号,T2WI呈高信号,T2 Flair呈低信号,病灶内分隔及周边呈高信号,DWI呈偏低信号,ADC值增高,增强扫描病灶内可见血管影穿行其中,病灶内见结节状强化及分隔强化或病灶无强化,边界欠清,无明显占位效应,瘤周未见水肿,伴周围脑皮质发育不良表现,临近颅骨呈受压改变。结论:胚胎发育不良性神经上皮肿瘤在MRI上具有特征性,提高对此病诊断率,对患者临床预后有较大的意义。
Objective：To explore the specific MRI features of dysembryoplastic neuroepithelial tumor.Method：MRI of DNET confirmed by surgery and pathology in 7 cases were respectively analysed and MRI specific findings of DNET were summarized.Result：DNET in these 7 cases were within or mainly in cortex.They had triangular shape with pseudocyst pattern.The signal intensity of DNET was slightly low on T1 WI,high on T2 WI and low on T2 Flair images.The internal septation and peripheral zone manifest was high signal intensity.DWI showed slightly low in signal intensity and ADC value was high.After administration of contrast,vessels might be seen passing through the lesions and the lesions might present with nodular enhancement with ill-defined margin,and the segmentation may enhance as well.Lesions might show no enhancement at times.There was no mass effect or peritumoral edema.The accompanied cortical dysplasia was revealed and compression of the adjacent cranial bone was seen.Conclusion：DNET demonstrates specific features on MRI,increasing diagnostic accuracy of DNET will be significantly beneficial to clinical prognosis.
出处
《中外医学研究》
2016年第6期59-60,共2页
CHINESE AND FOREIGN MEDICAL RESEARCH
