CAJ | 학술논문

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：WHO Ⅰ级12例，WHO Ⅱ级4例，WHO Ⅲ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。
목적：탐토로내불전형뇌막류적MRI표현특점병여조직병리대조，분석오진원인，이제고뇌막류적MRI진단준학솔。재료여방법회고성분석경수술병리증실적뇌막류22례，술전제일진단균오진위기타종류，소유병례술전균행MRI평소급증강소묘，장MRI표현여병리분급분형대조。결과22례오진병례MR정상：혹사뇌내종류적뇌막류8례，소견발병부위적뇌막류8례，상견부위적뇌막류6례；신호불균균15례，형태불규칙、구유침습성개변12례。술후병리특점：WHO Ⅰ급12례，WHO Ⅱ급4례，WHO Ⅲ급6례。결론인종류조직학결구복잡、생물학특성차이급소견특수발병부위，도치료뇌막류적불전형MRI표현，충분인식불전형뇌막류적MRI표현급기여병리분급분형적상관성，대제고진단준학솔구유중요개치。
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.