The anatomic variations of different types and their relationship with the chronic frontal sinusitis were discovered.
发现不同类型的解剖变异与慢性炎症的关系。
Objectives to analyse the cause of frontal sinusitis after transfrontal craniotomy and to explore the methods of pre-venting and treating it.
目的分析经额开颅术后出现额窦炎的原因，探讨其防治措施。
Objective to study the anatomic features of frontal drainage system on ct scan in chronic frontal sinusitis, and to evaluate its clinical value.
目的探讨慢性额窦炎额窦引流系统CT解剖特征及临床价值。
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