Online ISSN: 2515-8260

Keywords : olfactory fossa

Assessment of depth of olfactory fossa in prefunctional endoscopic sinus surgery computed tomography scan of paranasal sinuses

Dr. Shilpi Srivastava, Dr. Subhash C. Sylonia, Dr. IshfaqAyoub

European Journal of Molecular & Clinical Medicine, 2021, Volume 8, Issue 4, Pages 935-938

characterise India's population according to the Keros categorization (CT).
Materials and Methods: This study was conducted in our institution over a period of 1 year
(June 2018 to June 2019). Patients >16 years of age undergoing CT scan of paranasal sinuses
(PNS) were included. A total of 1200 patients' PNS CT scan studies were evaluated. The
vertical height of the lateral lamella was used to determine the depth of OF. Independent
samples t test and Chi Square test were used to examine the results by gender and laterality.
Results: OF had a mean depth of 5.16 ± 1.59 mm. The mean depth of OF between males and
females was statistically significant, but not between right and left sides. Keros type I was
discovered on 210 sides (17.5%), type II on 895 (74.6%), and type III on 95 sides (7.9
Conclusion: Even while the prevalence of the harmful type III OF is modest, it is
considerable, particularly among men and on the right side. To avoid iatrogenic
consequences, a preoperative assessment of depth is required.