Abstract
Of the rhinosinusitis (CRS) patients, half of whom require surgical intervention. Functional endoscopic sinus surgery (FESS) is a standard treatment of CRS and sinonasal polyposis. Orbito-ocular complications can occur during FESS. The lamina papyracea (LP) is the weakest point of the medial wall of the orbit. The variability in the size and shape of the paranasal sinuses is important in the FESS procedure. The ethmoid sinus is the most complex paranasal sinuses. Preoperative evaluation using computed tomography (CT) is mandatory for all patients undergoing FESS. This study aimed to determine the lamina papyracea area and ethmoid sinuses volume in patients who underwent a CT scan of paranasal sinuses. This study was a descriptive study on 103 patients who underwent a CT scan of paranasal sinuses in the Radiology Department of Hasanuddin University General Hospital, Makassar, from January to August 2019. The lamina papyracea area and ethmoid sinus volume were measured based on age and gender. The results showed that the average of lamina papyracea size and ethmoid sinus volume was greater in males than in females. There was a correlation between age and posterior height of left lamina papyracea (p=0.02), but no correlation between ethmoid sinuses volume and age.
Highlights
Lamina papyracea (LP) is the weakest point of the orbital medial wall, which forms the connecting line between the paranasal sinuses and the orbit [1]
The right and left ethmoid sinuses volume on a computed tomography (CT) scan of the paranasal sinuses in the coronal section
The results of this study are in line with the research conducted by Açar, et al (2018), which measured the average values of the anteroposterior length, anterior height, posterior height, and the area lamina papyracea [1]
Summary
Lamina papyracea (LP) is the weakest point of the orbital medial wall, which forms the connecting line between the paranasal sinuses and the orbit [1]. Precise knowledge of LP localization according to inferior nasal turbinate (INT) attachment to the lateral nasal wall is essential to avoid orbital penetration [3]. As a consequence of LP penetration, periorbital ecchymosis or emphysema, venous orbital hematoma, medial rectus injury, and blindness can occur. Recognizing CT images from normal LP anatomy allows assessment on the targets of ESS and reconstructive surgery, including careful planning, the use of additional surgical approaches, efficient clearance of ethmoid air cells on LP, avoiding injury, and obtaining the exact dimensions of the implant [6]
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