摘要
目的探讨颅内不典型脑膜瘤的MRI表现特点并与组织病理对照,分析误诊原因,以提高脑膜瘤的MRI诊断准确率。材料与方法回顾性分析经手术病理证实的脑膜瘤22例,术前第一诊断均误诊为其他肿瘤,所有病例术前均行MRI平扫及增强扫描,将MRI表现与病理分级分型对照。结果 22例误诊病例MR征象:酷似脑内肿瘤的脑膜瘤8例,少见发病部位的脑膜瘤8例,常见部位的脑膜瘤6例;信号不均匀15例,形态不规则、具有侵袭性改变12例。术后病理特点:WHOⅠ级12例,WHOⅡ级4例,WHOⅢ级6例。结论因肿瘤组织学结构复杂、生物学特性差异及少见特殊发病部位,导致了脑膜瘤的不典型MRI表现,充分认识不典型脑膜瘤的MRI表现及其与病理分级分型的相关性,对提高诊断准确率具有重要价值。
Objective: To study the relationship between the atypical meningioma of MRI findings and its pathological features, analyze the reasons of misdiagnosis, to improve the diagnostic level. Materials and Methods:MRI findings of 22 cases meningioma confirmed by surgery and pathology were analyzed retrospectively. All cases were performed enhanced MRI. Results:MRI ifndings of all the 22 cases meningioma were as following: 8 cases were exactly like intracerebral tumors, 8 cases located at uncommon sites, and 6 cases located at conman sites. Fifteen cases showed heterogeneous signal on MRI, 12 cases had invasive boundary. Pathological grade:WHO Ⅰ grade 12 cases, WHO Ⅱ grade 4 cases, WHO Ⅲ grade 6 cases. Conclusions:The reasons for misdiagnosis of meningioma on MRI include complexity of pathological changes, biological characteristics and unexpected locations. A key point of prompting the diagnosis of meningioma is to recognize the atypical ifndings on MRI combined with the pathological features.
出处
《磁共振成像》
CAS
CSCD
2015年第4期258-265,共8页
Chinese Journal of Magnetic Resonance Imaging
关键词
磁共振成像
脑膜瘤
误诊
病理学
Magnetic resonance imaging
Meningioma
Diagnostic errors
Pathology