Conclusion: Malignant meningiomas do have characteristic MRI features, to evaluate some MRI features has important significance in qualitative diagnosing malignant meningioma before operation.

• 结论：恶性脑膜瘤的MRI表现具有一定的特征性，评价某些MRI征象对恶性脑膜瘤的术前定性诊断具有重要意义。