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CT扫描证实,脑膜瘤周围常伴有脑水肿.恶性脑瘤如胶质瘤和转移癌,脑水肿瘤与肿瘤的生长速度及恶性程度有关,而脑膜瘤引起脑水肿的原因尚不清楚.本文对50例颅内脑膜瘤进行了回顾性研究,并复习了有关文献.50例中女35例,男15例,年龄23～78岁,平均48岁,所有病例手术前后都作了CT扫描,其肿瘤都经病理检查确诊.肿瘤的大小是通过测量CT各层面高密度肿瘤的最大长度和宽度获得的近似值,分为小(<2cm),中(2～4.5cm),大(>4.5cm).根据瘤周密度减低区的范围,将脑水肿分为无、轻度、中度和重度四级.肿瘤的组织学类型有成纤维细胞型、血管型及过渡型,无脑膜肉瘤.作者还对肿瘤的细胞构成、血管分布、有丝分裂的数目进行了研究,
CT scan confirmed that meningioma is often accompanied by cerebral edema around. Malignant brain tumors such as glioma and metastatic carcinoma, brain tumor and tumor growth rate and malignancy, and the cause of brain edema caused by meningioma is not yet clear. A retrospective study of 50 cases of intracranial meningioma and reviewed the literature.50 cases of 35 women, 15 males, aged 23 to 78 years, mean 48 years, all cases before and after surgery were made CT scan, The tumors were confirmed by pathological examination.The size of the tumor was approximated by measuring the maximum length and width of high-density tumors at all levels of CT and was divided into small (<2cm), medium (2 ~ 4.5cm), large (> 4.5cm ) According to the extent of tumor density reduction zone, brain edema is divided into no, mild, moderate and severe grade 4. Tumor histological types of fibroblast type, vascular and transitional type, no meninosarcoma. Also on the tumor cell composition, vascular distribution, the number of mitoses were studied,