1 临床资料 患者男性,28岁,歼-7飞行员,飞行时间900h。既往有飞行下滑时左前额胀痛史。口腔科体检无特殊发现。耳鼻咽喉科检查各鼻窦区无压痛,外鼻无畸形,鼻粘膜慢性充血.鼻中隔不偏、左侧下鼻甲轻度肿胀,用麻黄碱后可见左鼻腔底部距前鼻孔1cm处有一0.5cm×08cm突起物,呈白 1 clinical data patients male, 28 years old, J-7 pilots, flight time 900h. Previous history of left frontal pain during a decline in flight. Stomatological examination no special findings. Otorhinolaryngology examination sinus area no tenderness, nasal deformity, chronic nasal mucosa congestion .Nasal septum, left turbinate mild swelling, ephedrine can be seen at the bottom of the left nasal cavity from the front of the nose 1cm at a 0.5cm × 08cm protrusion Material, was white