text: 脑内小脓肿的诊断要点是：①隐匿起病，多无明确感染史；②无明显感染中毒症状；③以局灶性癫痫发作为首发及主要症状，常无明显局灶体征；④脑脊液化验多属正常，或仅有压力或蛋白轻度升高；⑤CT平扫脓腔显示不清，脓腔与周围脑水肿界限模糊，表现为2～5cm大小的不规则低密度区，CT值5～27H。
entities.entity: 脑内小脓肿
entities.label: dis
entities.entity: 局灶性癫痫
entities.label: dis
entities.entity: 压力或蛋白轻度升高
entities.label: sym
entities.entity: CT平扫
entities.label: pro
entities.entity: 脓腔与周围脑水肿界限模糊
entities.label: sym
entities.entity: 2～5cm大小的不规则低密度区
entities.label: sym
entities.entity: CT
entities.label: pro
entities.entity: CT值5～27H
entities.label: sym