Objective To clarify the CT criteria for encephalitic stage and enveloped stage of brain abscess.

目的明确脑脓肿脑炎期与包膜期CT分期标准。

Conclusion: Packing drainage by transmastoid approach proves effective to treat the otogenic brain abscess.

5%。结论:经乳突腔填塞法治疗耳源性脑脓肿,疗效良好。

The incidence of umbilicated indentation in astrocytoma, cerebral metastases and brain abscess was nearly the same, showing no value in qualitative diagnosis.

环壁脐样凹陷在星形细胞来源肿瘤、脑转移瘤、脑脓肿三者中出现率相近，无明显定性价值。