open access

Vol 82, No 4 (2023)
Original article
Submitted: 2022-09-17
Accepted: 2022-12-15
Published online: 2023-01-17
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Prevalence of the Onodi cell in the Polish adult population: an anatomical computed tomography study

J. Jaworek-Troć1, K. Ochwat1, J. A. Walocha1, I. Zamojska1, M. Lipski1, A. Żytkowski23, R. Chrzan4, J. Zawiliński1, S. K. Ghosh5, M. P. Zarzecki1
·
Pubmed: 36688408
·
Folia Morphol 2023;82(4):885-891.
Affiliations
  1. Department of Anatomy, Jagiellonian University Medical College, Krakow, Poland
  2. Faculty of Philology, Department of Polish Dialectology and Logopaedics, University of Lodz, Poland
  3. Norbert Barlicki Memorial Teaching Hospital No. 1 of the Medical University of Lodz, Poland
  4. Department of Radiology, Jagiellonian University Medical College, Krakow, Poland
  5. Department of Anatomy, All India Institute of Medical Science, Patna, Bihar, India

open access

Vol 82, No 4 (2023)
ORIGINAL ARTICLES
Submitted: 2022-09-17
Accepted: 2022-12-15
Published online: 2023-01-17

Abstract

Background: Onodi cell is a posterior ethmoid air cell with the optic canal bulging
into it; the common position of the bulge is into the sphenoid sinus, usually
immediately posterior to the posterior ethmoid air cells. Variable pneumatisation
patterns lead to various structures of lamellae and sinuses occasionally exposing
important nerves and vessels, such as the optic and vidian nerves, internal carotid
artery and cavernous sinus. In clinical practice, special imaging techniques are
used to navigate through the paranasal sinuses and hence avoid injury to these
structures. This study is aimed to determine the prevalence of the Onodi cell in
the Polish population and compare it with other reported occurrences.
Materials and methods: A retrospective analysis of 296 computed tomography
(CT) scans of patients treated in Krakow, Poland, using a Siemens Somatom Sensation
16 spiral CT scanner. No contrast medium was administered.
Results: The Onodi cell was found in 31 out of the 296 patients, or approximately
10.5%, consistent with the majority of research reporting on Onodi variants. Additionally,
there was one presentation of a bilateral Onodi cell in a male patient.
No statistically significant difference was found between the male and female
populations with a positive identification of the variant (p = 0.095, Chi2 test).
Conclusions: This study helped approximate the Onodi variant prevalence of
10.47%, falling within a commonly reported range 8–14%. This gives clinicians
and surgeons a better understanding of this variant’s structure and significance,
and therefore an opportunity to improve treatment outcomes and research.

Abstract

Background: Onodi cell is a posterior ethmoid air cell with the optic canal bulging
into it; the common position of the bulge is into the sphenoid sinus, usually
immediately posterior to the posterior ethmoid air cells. Variable pneumatisation
patterns lead to various structures of lamellae and sinuses occasionally exposing
important nerves and vessels, such as the optic and vidian nerves, internal carotid
artery and cavernous sinus. In clinical practice, special imaging techniques are
used to navigate through the paranasal sinuses and hence avoid injury to these
structures. This study is aimed to determine the prevalence of the Onodi cell in
the Polish population and compare it with other reported occurrences.
Materials and methods: A retrospective analysis of 296 computed tomography
(CT) scans of patients treated in Krakow, Poland, using a Siemens Somatom Sensation
16 spiral CT scanner. No contrast medium was administered.
Results: The Onodi cell was found in 31 out of the 296 patients, or approximately
10.5%, consistent with the majority of research reporting on Onodi variants. Additionally,
there was one presentation of a bilateral Onodi cell in a male patient.
No statistically significant difference was found between the male and female
populations with a positive identification of the variant (p = 0.095, Chi2 test).
Conclusions: This study helped approximate the Onodi variant prevalence of
10.47%, falling within a commonly reported range 8–14%. This gives clinicians
and surgeons a better understanding of this variant’s structure and significance,
and therefore an opportunity to improve treatment outcomes and research.

Get Citation

Keywords

Onodi cell, sphenoid sinus, anatomy, computed tomography

About this article
Title

Prevalence of the Onodi cell in the Polish adult population: an anatomical computed tomography study

Journal

Folia Morphologica

Issue

Vol 82, No 4 (2023)

Article type

Original article

Pages

885-891

Published online

2023-01-17

Page views

778

Article views/downloads

587

DOI

10.5603/FM.a2023.0001

Pubmed

36688408

Bibliographic record

Folia Morphol 2023;82(4):885-891.

Keywords

Onodi cell
sphenoid sinus
anatomy
computed tomography

Authors

J. Jaworek-Troć
K. Ochwat
J. A. Walocha
I. Zamojska
M. Lipski
A. Żytkowski
R. Chrzan
J. Zawiliński
S. K. Ghosh
M. P. Zarzecki

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