methods 50 cases(70 sides)who underwent tran- nasal endoscopic frontal surgey for chronic frontal sinusitis were divided into two groups randomly.
方法慢性额窦炎行功能性鼻内镜额窦手术患者50例(70侧)。
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.