在鼻窦中，以筛窦解剖最为复杂，特别是前组筛窦开口处的半月裂孔及其附近的钩突和筛漏斗等，是中鼻道内的小突起和沟状间隙，称为窦口鼻道复合体。该处是鼻腔吸入气流冲击之处，也是细菌、病毒、吸入性抗原（变应原）最易侵入的部位。无论感染或变态反应，开始都是表现为该处黏膜肿胀，纤毛运动停止，筛窦通气和引流受阻，然后才波及到其他鼻窦。
结论：筛漏斗及钩突的解剖形态是慢性鼻窦炎发病的重要解剖因素。
Conclusions: the anatomic structures of the uncinate process and ethmoid infundibulum have close relation to chronic sinusitis.
目的观察评价慢性鼻窦炎(CRS)筛窦骨质的病理变化特点和病变规律。
Objective to investigate the histopathologic study of the ethmoid bone in chronic sinusitis (CRS) and the role of bone pathology in the pathogenesis of CRS.
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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