Scholarlink

Background <p>The Onodi cell is the most posterior ethmoid air cell that extends to the sphenoid sinus; its recognition is crucial prior to endoscopic sinus and skull base surgery to avoid complications. This study aims to identify the prevalence of Onodi cells and to recognize their relationship with the optic nerve and the sphenoid sinus.</p> Methods <p>Axial CT scan images of paranasal sinuses were taken and reviewed for 152 patients between May 2018 and March 2019. The most posterior ethmoid cells have been classified into three types based on the optic nerve relationship as follows: Type A: no contact, Type B: just contact, and Type C: wall being bulged by the optic nerve or if there is dehiscence (deh.) of the optic nerve canal. Using coronally reformatted images, the pneumatization patterns of the Onodi cell (OC) relevant to the sphenoid sinus (SS) were further classified into three patterns: superolateral, superior, and lateral.</p> Results <p>The prevalence of Onodi cells among patients was 18% (28/152); when examined per sphenoid side, Onodi cells were present in 11.5% (35/304) of sides. The most posterior ethmoid air cells are Types A, B, and C, which constitute 88.4%, 8.94%, and 2.64%, respectively. Onodi cell pneumatization pattern is as follows: superolateral, superior, and lateral Onodi cells were 80%, 17%, and 2.8%, respectively.</p> Conclusion <p>This study provides variations of the onodi cells and their relevant vital structures for both otolaryngologists and radiologists to be a guide for more accurate review during endoscopic sinus and skull base surgery.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Onodi cells prevalence and their most common types in the Kurdistan Region of Iraq

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年1月23日

查看全文
  • Huda Abdulmunem Ibrahim,
  • Akeel Alhelfy,
  • Abeer Kadum Abass Al-Zuhairy,
  • Muaid Ismaiel Aziz Baban

摘要

Background

The Onodi cell is the most posterior ethmoid air cell that extends to the sphenoid sinus; its recognition is crucial prior to endoscopic sinus and skull base surgery to avoid complications. This study aims to identify the prevalence of Onodi cells and to recognize their relationship with the optic nerve and the sphenoid sinus.

Methods

Axial CT scan images of paranasal sinuses were taken and reviewed for 152 patients between May 2018 and March 2019. The most posterior ethmoid cells have been classified into three types based on the optic nerve relationship as follows: Type A: no contact, Type B: just contact, and Type C: wall being bulged by the optic nerve or if there is dehiscence (deh.) of the optic nerve canal. Using coronally reformatted images, the pneumatization patterns of the Onodi cell (OC) relevant to the sphenoid sinus (SS) were further classified into three patterns: superolateral, superior, and lateral.

Results

The prevalence of Onodi cells among patients was 18% (28/152); when examined per sphenoid side, Onodi cells were present in 11.5% (35/304) of sides. The most posterior ethmoid air cells are Types A, B, and C, which constitute 88.4%, 8.94%, and 2.64%, respectively. Onodi cell pneumatization pattern is as follows: superolateral, superior, and lateral Onodi cells were 80%, 17%, and 2.8%, respectively.

Conclusion

This study provides variations of the onodi cells and their relevant vital structures for both otolaryngologists and radiologists to be a guide for more accurate review during endoscopic sinus and skull base surgery.