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
观察,认为星状裂作为恒定
解
标志是识别额窦开口
关键
域。筛泡前径路是鼻内镜下额窦开放
安全入路,能避免其他径路
某些风险。