Year: 2026
Type: paratext
Abstract: The olfactory fossa is one of the regions of the anterior skull base with the most anatomical diversity. Its depth, which is determined by the lateral lamella of the cribriform plate, is commonly classified using the Keros technique. Understanding this diversity becomes essential for accurate anatomical analysis and population-based assessment. In the present study 140 adult patients who had non-contrast paranasal sinus computed tomography at a tertiary care facility were included. On coronal CT scans, the depth of the olfactory fossa was assessed at its deepest point. The Keros categorization was used on both sides. SPSS was used for the statistical analysis, with a significance level of p < 0.05.The most common configuration was Keros Type II, which was followed by Type I and Type III. The bilateral symmetry was seen in the olfactory fossa, and there was no statistically significant difference between the two sides. A substantial variation in depth was noted on the left side, although gender-wise analysis revealed no significant correlation with Keros categorization. The study's objective is to assess the olfactory fossa's anatomical diversity in an adult population using Keros classification and related morphometric measures. In the adult population under study, Keros Type II is predominant. Regular side-based assessment with coronal CT improves knowledge of anterior skull base variability and yields useful morphometric data.
DOI: 10.69980/rvfyhf43
Authors: Bhawna Sharma, Dr Anjali Gopalrao Patil
Institution: Index Medical College, Hospital & Research Centre
Language: English
Subfield: Surgery
Field: Medicine
Domain: Health Sciences
Open Access status: diamond
OpenAlex ID: W7160051649