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Anatomical configurations of the optic canal in the sphenoid sinus in a Hispanic population: computed tomography based study

Published online by Cambridge University Press:  07 February 2022

J L Treviño-Gonzalez ,
K M Santos-Santillana ,
F Maldonado-Chapa ,
J A Morales-Del Angel Open the ORCID record for J A Morales-Del Angel [Opens in a new window]  and
J A Becerra-Jimenez
J L Treviño-Gonzalez*
Affiliation:
Otolaryngology and Head and Neck Surgery Division, School of Medicine and University Hospital ‘Dr. Jose E. González’, Universidad Autónoma de Nuevo León, Monterrey, Mexico
K M Santos-Santillana
Affiliation:
Otolaryngology and Head and Neck Surgery Division, School of Medicine and University Hospital ‘Dr. Jose E. González’, Universidad Autónoma de Nuevo León, Monterrey, Mexico
F Maldonado-Chapa
Affiliation:
Otolaryngology and Head and Neck Surgery Division, School of Medicine and University Hospital ‘Dr. Jose E. González’, Universidad Autónoma de Nuevo León, Monterrey, Mexico
J A Morales-Del Angel
Affiliation:
Otolaryngology and Head and Neck Surgery Division, School of Medicine and University Hospital ‘Dr. Jose E. González’, Universidad Autónoma de Nuevo León, Monterrey, Mexico
J A Becerra-Jimenez
Affiliation:
Radiology Division, School of Medicine and University Hospital ‘Dr. Jose E. González’, Universidad Autónoma de Nuevo León, Monterrey, Mexico
*
Author for correspondence: Dr J L Treviño-Gonzalez, Otolaryngology and Head and Neck Surgery Division, School of Medicine and University Hospital ‘Dr. Jose E. González’, Universidad Autónoma de Nuevo León, Ave. Madero y Gonzalitos s/n, Mitras Centro, Monterrey 64460, Mexico E-mail: [email protected]
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Abstract

Objective

The prevalence of the optic canal anatomical variants across the sphenoid sinus varies widely among different ethnic groups. This study aimed to analyse the anatomical variants of the optic canal and their relationship to sphenoid sinus pneumatisation in a Hispanic population.

Method

A review of 320 sphenoid sinuses by high-resolution computed tomography was performed. DeLano's classification of the optic canal, presence of dehiscence, septa insertion, sphenoid sinus pneumatisation and presence of Onodi cells were established.

Results

Dehiscence of the optic canal was observed in 4.7 per cent (n = 15) of the analysed sinuses. Type 4 and 3 optic canals were significantly more frequent among postsellar sphenoid sinuses than other patterns of sphenoid sinus pneumatisation (p = 0.002 and p = 0.018). A type 4 optic canal has a higher tendency to present inserted septum than other optic canal types (p = 0.014).

Conclusion

This study described the optic canal variants in a Hispanic population, which complements existing literature addressing other ethnicities.

Keywords

Sphenoid SinusAnatomic VariationEndoscopySkull BaseOptic NerveOptic Nerve Injuries
Type
Main Article
Information
The Journal of Laryngology & Otology , Volume 137 , Issue 3 , March 2023 , pp. 279 - 284
Copyright
Copyright © The Author(s), 2022. Published by Cambridge University Press on behalf of J.L.O. (1984) LIMITED

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Footnotes

Dr J L Treviño-Gonzalez takes responsibility for the integrity of the content of the paper

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