KHẢO SÁT GIẢI PHẪU ĐƯỜNG DẪN LƯU XOANG TRÁN VÀ ĐÁNH GIÁ MỐI LIÊN QUAN VỚI TÌNH TRẠNG VIÊM XOANG TRÁN BẰNG PHẦN MỀM DỰNG HÌNH 3 CHIỀU

Abstract

Backgrounds: The complexity of frontal sinus drainage pathway anatomy poses a challenge for otolaryngologists. A comprehensive understanding of frontal cells and their impact on the frontal sinus outflow tract is crucial. Our study uses three-dimensional reconstruction software to analyze computed tomography images with the aim of examining the anatomical characteristics of the frontal sinus drainage pathway types, the frontal recess cells, and their association with frontal sinusitis. Methods: This is a cross-sectional descriptive study using Stryker Building Blocks software to identify frontal recess cells and their relationship with the frontal sinus drainage pathways. Statistical analysis was performed to determine the association between the frontal recess cells and the types of frontal sinus drainage pathways with frontal sinusitis. Results: A total of 1,008 frontal sinuses (375 with sinusitis) from 504 patients, aged 16-94 years were included. The anterior cells group was present in 962 frontal sinuses (95.44%), while 783 frontal sinuses had posterior recess cells (77.68%). There was a statistically significant association between frontal sinusitis and the presence of supra agger nasi frontal cells (SAFC), supra bulla frontal cells (SBFC), and supraorbital ethmoidal cells (SOEC). An association was also found between frontal sinusitis and the simultaneous presence of all three cells’ groups: anterior, medial, and posterior cells. In 27 non-inflamed frontal sinuses, the drainage pathway was observed to run posteriorly to the ethmoid bulla (BE), a phenomenon not seen in affected cases, with this difference being statistically significant. Conclusion: Although their prevalence is low, SAFC, SBFC, and SOEC are significantly associated with the development of frontal sinusitis. The types of frontal sinus drainage pathways did not differ significantly between the sinusitis and non-sinusitis groups, except for the occurrence of the posteriorly-directed frontal sinus drainage pathway behind the BE, which was only observed in the non-sinusitis group.