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.
结论通过鼻内镜对额及周围解剖结
观察,认为星状裂作为恒定
解剖标志是识别额
关键区域。筛泡前径路是鼻内镜下额
放
安全入路,能避免其他径路存在
某些风险。