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。
Objective to study the anatomic features of frontal drainage system on ct scan in chronic frontal sinusitis, and to evaluate its clinical value.
方法慢性额窦炎行功能性鼻内镜额窦手术患者50例（70侧）。
Methods 50 cases(70 sides)who underwent tran- nasal endoscopic frontal surgey for chronic frontal sinusitis were divided into two groups randomly.
不同中鼻甲气化类型之间慢性额窦炎的数量差异无统计学意义，慢性前组筛窦炎及上颌窦炎的数量差异有统计学意义。
No difference of chronic frontal sinusitis number in various pneumatized types was found, but the difference of chronic anterior ethmoid sinusitis and maxillary sinusitis number was significant.
不同中鼻甲气化类型之间慢性额窦炎的数量差异无统计学意义，慢性前组筛窦炎及上颌窦炎的数量差异有统计学意义。
No difference of chronic frontal sinusitis number in various pneumatized types was found, but the difference of chronic anterior ethmoid sinusitis and maxillary sinusitis number was significant.
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