【摘要】 目的通过分析眶上筛房在 CT 和鼻内镜下的临床特征,进一步阐明眶上筛房和额窦引流通道的关系。方法通过术前评估冠状位和水平位 CT 和术中鼻内镜所见,确诊眶上筛房5侧(男4例,女1例,每例1侧)。结果①眶上筛房在冠状位 CT 上表现为额窦区域最外侧的气房;②眶上筛房在水平位 CT 上表现为额窦后外方的气房;③鼻内镜下见额窦和眶上筛房均引流至前筛顶部,眶上筛房的引流通道位于额窦引流口的后外方,眶上筛房向外上方气化,从后方进入额窦。结论CT 和鼻内镜观察证实眶上筛房是位于筛泡上方的气房向上、向外延展过程中,超过了筛骨眶板和筛顶的范围,导致额骨眶板气化而成。更多还原

【Abstract】 Objective To understand the anatomy of the supraorbital ethmoid cell and its relationship with the frontal sinus drainage pathway.Methods Five patients(5 sides)who had supraorbital ethmoid cell underwent endoscopic frontal sinus surgery.Computed tomographic(CT)scans of the sinuses were obtained in coronal and axial views.The frontal sinus ostium and the supraorbital ethmoid cell were endoscopically identified respectively.Results On coronal CT scans,the supraorbital ethmoid cell was a separate cell lateral to the frontal sinus.And on axial CT scans,it was lateral and posterior to the frontal sinus drainage pathway.Under endoscope,its opening was lateral and posterior to the frontal sinus ostium. Conclusions The supraorbital ethmoid cell extended superolaterally the boundaries of the lamina papyracea and the roof of the ethmoid to pneumatize the orbital plate of the frontal bone.更多还原