鼻外途径的额筛窦手术和骨成形瓣额窦闭塞术是慢性额窦炎的传统治疗方法。自 80年代以来由于鼻内窥镜的广泛应用 ,经鼻内途径治疗额窦炎的报道渐多 ,因具有直视下操作 ,避免皮肤切口等优点 ,受到普遍青睐。但在治疗一些病情较重的额窦炎时仍有局限性。为观察鼻内窥镜下手术的效 Nasal route of the amount of ethmoid sinus surgery and bone flap valve frontal sinus occlusion is the traditional treatment of chronic frontal sinusitis. Since the 1980s, due to the wide application of nasal endoscope, nasal route to treat frontal sinusitis has been reported more and more, because of direct vision operation, to avoid the advantages of skin incision, are generally favored. However, in the treatment of some patients with frontal sinusitis still have limitations. To observe the effectiveness of surgery under nasal endoscopy