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本文报告６例因ＣＴ表现囊性低密度及混杂密度的非典型脑膜瘤改变，术前分别诊断为胶质瘤或转移瘤的患者。并讨论了此种影像学表现的病理学基础，强调对ＣＴ类似表现的肿瘤应结合病史、临床表现及脑膜瘤特点进行综合分析。而ＭＲ可提高本病的术前诊断率。
This paper reports 6 cases of atypical meningiomas with cystic low density and mixed density due to CT changes. The patients were diagnosed as gliomas or metastases before surgery respectively. And discussed the pathological basis of such imaging findings, emphasizing the CT-like performance of the tumor should be combined with history, clinical manifestations and characteristics of meningioma comprehensive analysis. The MR can improve the preoperative diagnosis of the disease.