【摘要】 目的 探讨囊性脑膜瘤的MRI表现,以提高其诊断的准确率。方法 收集经手术病理证实的囊性脑膜瘤15例,采用Nauta分型进行分析,结合手术和病理,观察、分析不同类型囊性脑膜瘤的MRI表现及其特点。结果 囊性脑膜瘤除具有与脑膜瘤相似的发病部位、肿瘤形态、肿瘤实质信号和强化方式、以及脑膜尾征等征象外,还表现为肿瘤内或周围有大小不等的囊腔,囊壁可有或无强化。本组15例,其中NautaⅠ型3例,NautaⅡ型4例,NautaⅣ型2例,另外6例为2种或2种以上的混合型。结论 囊性脑膜瘤具有较特殊的MRI表现,尤其是MRI增强扫描,对囊性脑膜瘤的诊断与分型具有较高的价值。更多还原

【Abstract】 Objective To study the MRI manifestations of cystic meningiomas so that to improve the diagnostic accuracy of this tumor.Methods MRI manifestations of cystic meningioma pathologically proved in 15 cases were analyzed retrospectively,according to Nauta classification and were compared with operative and pathological findings.Results MR imaging features of most cystic meningioma in the locations,form,signal intensity of solid part of tumor and the enhancing behavior(including tial sign) were similar with that of meningioma,besides these,the tumors presented cystic parts in different size with or without contrast-enhanced in cystic walls.Of the 15 cases,there were Nanta Ⅰ in 3,Nanta Ⅱ in 4,Nauta Ⅳ in 2 and mixed type in 6.Conclusion Cystic meningioma has special MRI features,MRI,especially contrast-enhanced MR imaging is valuable in the diagnosis and classification of this tumor.更多还原