Assessment of depth of olfactory fossa in pre-functional endoscopic sinus surgery computed tomography scan of paranasal sinuses

Abhijit Pawar; Santosh Konde; Priya Bhole

doi:10.18203/issn.2454-5929.ijohns20174663

Authors

Abhijit Pawar Department of Radiology, Smt. Kashibai Navale Medical College and General Hospital, Narhe, Pune, Maharashtra, India
Santosh Konde Department of Radiology, Smt. Kashibai Navale Medical College and General Hospital, Narhe, Pune, Maharashtra, India
Priya Bhole Department of Radiology, Smt. Kashibai Navale Medical College and General Hospital, Narhe, Pune, Maharashtra, India

DOI:

https://doi.org/10.18203/issn.2454-5929.ijohns20174663

Keywords:

Computed tomography, Pre–functional endoscopic sinus surgery, Olfactory fossa, Lateral lamella

Abstract

Background: To evaluate the olfactory fossae depth according to the Keros' classification on pre functional endoscopic sinus surgery (pre-FESS) and determine the incidence and degree of asymmetry in the height of the ethmoid roof in the population of western Maharashtra.

Methods: Retrospective analysis of 200 multidetector CT studies (400 sides) of paranasal sinuses performed in between January to August, 2017.

Results: According to the Keros’ classification, the incidence of different types of olfactory fossae was as follows: type I: 18.5%, type II: 74.5% and type III: 7%. Asymmetry in the ethmoid roof height was found in 11.5% of cases.

Conclusions: Keros’ type II was the commonest followed by type I and type III. There was asymmetry in the depth of the olfactory fossae in 11.5% cases. There was no significant gender predilection as far as type and asymmetry were considered.

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