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Is there a relationship between Onodi cell and optic canal?

  • Adnan Özdemir
  • Nuray Bayar Muluk
  • Neşe Asal
  • Mehmet Hamdi Şahan
  • Mikail Inal
Rhinology
  • 22 Downloads

Abstract

Objectives

We investigated the relationship between Onodi cells and optic canal by paranasal sinus computed tomography (PNSCT).

Methods

In this retrospective study, 508 PNSCT (265 males and 243 females) was examined. Onodi cell presence, pneumatization types, optic canal types; and also sphenoid sinusitis and anterior clinoid process pneumatization were evaluated.

Results

The prevalence of Onodi cells was 21.2% of the patients. Onodi cells were observed 40.7% on the right side and 25.9% on the left side. In 33.4% of the patients, bilateral Onodi cells were present. Male/Female ratio was 24.5%/17.6%. Onodi cell types were detected as Type I > Type II > Type III bilaterally. There was a positive correlation between the right and left Onodi cell types (p < 0.05). Optic canal types were detected as Type IV > Type I > Type II > Type III. bilaterally. There was a positive correlation between right and left optic canal types. Onodi cell presence and ACP pneumatization were found as statistically significant (p < 0.05). In 65.5% of the patients, Onodi cells and ACP pneumatization were absent. ACP pneumatization was present in 35.4% of the cases. In nine cases, bilateral Onodi cells and ACP pneumatization were detected. Sphenoid sinusitis was detected in 11.4% of Type I and 13.8% of the Type II Onodi cells on the right side. On the left side, it was detected in 12.9% of the Type I and 19.0% of Type II Onodi cells.

Conclusion

Identification of Onodi cell is very important clinically because of its proximity to optic nerve canal. We concluded that type IV Onodi–optic canal relationship was the most common finding in our study. Onodi cell presence and their patterns of pneumatization must be evaluated on PNSCT preoperatively to avoid optic canal damage.

Keywords

Onodi cell Pneumatization types Optic canal Sphenoid sinusitis Anterior clinoid process pneumatization Paranasal sinus computed tomography 

Notes

Author contributions

AO: planning, designing, data collection, literature survey. NBM: planning, designing, literature survey, statistical analysis, writing. NA: planning, designing, literature survey. MHS: planning, designing, literature survey. MI: planning, designing, data collection, literature survey.

Funding

There is no funding for this article.

Compliance with ethical standards

Financial disclosure

There is no financial disclosures of the authors.

Conflict of interest

The author Adnan Özdemir declares that he has no conflict of interest. The author Nuray Bayar Muluk declares that she has no conflict of interest. The author Neşe Asal declares that she has no conflict of interest. The author Mehmet Hamdi Şahan declares that he has no conflict of interest. The author Mikail Inal declares that he has no conflict of interest.

Ethical approval

This study is retrospective. Ethics committee approval was obtained from Kırıkkale University Non-invasive Research Ethics Committee (Date: 24.10.2018, Number: 2018.10.15).

Informed consent

There is no need to take informed consent, because the data were evaluated retrospectively.

Supplementary material

405_2019_5284_MOESM1_ESM.pdf (423 kb)
Supplementary material 1 (PDF 422 KB)
405_2019_5284_MOESM2_ESM.pdf (757 kb)
Supplementary material 2 (PDF 757 KB)

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Radiology Department, Faculty of MedicineKırıkkale UniversityKırıkkaleTurkey
  2. 2.ENT Department, Faculty of MedicineKırıkkale UniversityKırıkkaleTurkey
  3. 3.Birlik MahallesiAnkaraTurkey

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