Abstract
This study aimed to investigate the olfactory fossa according to the Keros classification using cone beam computed tomography. This cross-sectional study analysed cone beam computed tomography images selected from a database belonging to a radiology centre. The scans of 174 healthy patients were analysed by using the Xoran software. Gender, age, and side were correlated with the Keros classification. The mean age of the 174 patients was 45.3 years. The most prevalent Keros classification was type II (65.52%), followed by type III (20.69%) and type I (13.79%). No significant differences were found between Keros classification and the variables age, right side (p value = 0.4620), and left side (p value = 0.5709). There were also no significant differences between gender and the variables right side (p value = 0.1421) and left side (p value = 0.2136). Based on these results, we suggest that cone beam computed tomography can be recommended for analysis of the anterior skull base. Keros type II was the most prevalent type in our sample.
Highlights
Endoscopic surgery of paranasal sinuses is the chosen technique for treatment of chronic rhinosinusitis and clinical management of many disorders such as mucoceles, nasal polyposis, and sellar tumours
Endoscopic management of the paranasal sinuses raises issues on possible risks of perforation during the surgical procedure, with emphasis on regions of the ethmoidal roof and cribriform plate corresponding to the olfactory fossa because of their inherent characteristics of fragility resulting from their extremely thin composition [14]
Basak et al [18] pointed out the importance of the previous studies prior to interventions in the paranasal sinuses for identification of anatomical variations, including localization of the anterior ethmoidal artery and cribriform plate of the ethmoidal bone
Summary
Cone Beam Computed Tomography-Based Anatomical Assessment of the Olfactory Fossa. Andre Luiz Ferreira Costa ,1 Aline Kataki Paixão, Bianca Costa Gonçalves, Celso Massahiro Ogawa, Thiago Martinelli, Fernando Akio Maeda, Tarcila Trivino, and Sergio Lucio Pereira de Castro Lopes. Is study aimed to investigate the olfactory fossa according to the Keros classification using cone beam computed tomography. Ere were no significant differences between gender and the variables right side (p value 0.1421) and left side (p value 0.2136). No significant differences were found between Keros classification and the variables age, right side (p value 0.4620), and left side (p value 0.5709). Based on these results, we suggest that cone beam computed tomography can be recommended for analysis of the anterior skull base. Keros type II was the most prevalent type in our sample
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