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目的 探索恶性脑膜瘤的ＣＴ、ＭＲＩ特征以提高临床影像学的诊断正确率。方法 对比分析了１５ 例经病理证实的恶性脑膜瘤和２０ 例良性脑膜瘤的ＣＴ、ＭＲＩ表现。结果 恶性脑膜瘤的结构非均质性（７／１５）、分叶及结节特征（１０／１５） 和短粗的硬膜尾征形态（４／１５） 均明显高于良性组（ Ｐ＜ ００５）。结论 良、恶性脑膜瘤在影像学表现方面存在某些明显差异性，认识恶性脑膜瘤的影像特征可以减少术前误诊。
Objective To explore the CT and MRI features of malignant meningioma to improve the diagnostic accuracy of clinical imaging. Methods CT and MRI findings of 15 cases of pathologically confirmed malignant meningioma and 20 cases of benign meningiomas were analyzed. Results The structural heterogeneity (7/15), lobulated and nodular features (10/15) and stubby epidural morphology (4/15) in malignant meningioma were significantly higher than those in benign group (P < 0 05). Conclusion There are some significant differences in imaging manifestations between benign and malignant meningiomas. Understanding the imaging features of malignant meningioma can reduce the misdiagnosis of preoperative.