恶性水肿是由梭菌引起的多种动物的一种急性、创伤性、中毒性传染病。其特征为病变组织发生气性水肿，井伴有发热和全身性毒血症。
减压手术对恶性大脑水肿也是有效的。
Decompressive surgery is also effective for malignant cerebral edema.
结果：MRI所示的脑膜瘤瘤周水肿程度与肿瘤的良恶性程度有关联性，而与发生部位、大小无显著关联性。
Results the degree of peritumoral edema on MRI scans was related to the malignant degree of meningioma, not the location and the size of tumor.
结果：一位9岁的女孩因腰痛接受腰椎MRI显示有包括广泛的脊髓水肿和信号增加在内的潜在恶性特征的骶骨肿瘤。
Results. A 9-year-old girl with back pain receives an MRI of the lumbar spine demonstrating a sacral tumor with potentially malignant features including extensive marrow edema and enhancement.
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