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４例囊性脑膜瘤，年龄４～６２岁，病程３个月～半年；ＣＴ扫描３例呈不规则环状强化囊性病灶，１例呈多房囊变；灶周均伴有中－重度水肿带。影像学均误诊为＂胶质瘤＂。术中发现囊液１０～５０ｍｌ不等；病理结果：恶性脑膜瘤２例，纤维型脑膜瘤１例，细胞生长活跃脑膜瘤１例；其中１例病理切片拟为星形细胞瘤，后经免疫组化检查证实为脑膜瘤。作者结合文献讨论了囊性脑膜瘤的临床及ＣＴ影像特点，指出其临床症状及ＣＴ扫描缺乏典型脑膜瘤的表现，易误诊为颅内其它性质的肿瘤致手术处理不彻底；因其具有明显的侵袭性和较高比例的恶变，术后应辅助放疗。
4 cases of cystic meningioma, aged 4 to 62 years, duration of 3 months to 6 months; CT scan showed irregular cystic cystic lesions in 3 cases, 1 case was multiple atrial capsule lesions were accompanied by moderate-severe Edema band. Imaging were misdiagnosed as “glioma.” Intraoperative findings of cystic fluid ranging from 10 to 50ml; pathological findings: 2 cases of malignant meningioma, fibrosing meningioma in 1 case, cell growth of active meningiomas in 1 case; 1 case of pathological astigma to be tumor, after immunization Tissue examination confirmed meningioma. The authors discussed the clinical features and CT features of cystic meningioma in combination with the literature, pointing out that their clinical symptoms and CT scan lack the performance of typical meningioma, and misdiagnosed as intracranial tumors of other nature caused by incomplete surgical treatment; because of its obvious Invasive and a high proportion of malignant, postoperative radiotherapy should be adjuvant.