ethmoid

Performation of surgical procedures anterior to ethmoid bulla can avoid risks of the other models, therefore, endoscopic frontal sinusotomy in the route anterior to ethmoid bulla is a safe model.

论通过鼻内镜对额窦开口及周围解剖的观察，认为星状裂作为恒定的解剖标志是识别额窦开口的关键区域。泡前径路是鼻内镜下额窦开放的安全入路，能避免其他径路存在的某些风险。

Result: There were statistical differences between the adult group and the pediatric group in ethmoid bulla hypertrophy and middle nasal concha etherealization.

:泡肥大和中鼻甲气化的出现率在成年组和未成年组差异有统计学意。