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我们收集并分析了21例CT扫描显示为小结节状高密度增强灶并伴低密度水肿带的病例，分析其CT诊断与临床结果。外科1临床资料1．1一般情况男15例，女6例；年龄11～42岁，平均20岁。近期患过感冒19例，鼻窦炎4例，中耳炎1例。21例均以头痛和发作性抽搐就诊。平扫CT显示小片状低密
We collected and analyzed 21 cases of CT scan showed small nodular high-density lesion with low-density edema cases, analysis of CT diagnosis and clinical results. Surgery 1 Clinical data 1.1 General Male 15 cases, 6 females; aged 11 to 42 years, mean 20 years. 19 cases of recent cold, sinusitis in 4 cases, 1 case of otitis media. Twenty-one patients were treated with headache and seizures. Flat-scan CT showed small low-density