Methods Various benign neoplasms from ethmoid sinuses were removed under nasal endoscope,these were 7 cysts,3 cases of osteofibroma,1 adenoma and 2 cases of osteoma.

• 方法经鼻内镜治疗筛窦囊肿7例,骨化纤维瘤3例,腺瘤1例,骨瘤2例。