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Published on: March 4, 2013
The central Onodi cell: A previously unreported anatomic variation.
Deepa V Cherla1, Senja Tomovic, James K Liu
1Departments of Otolaryngology-Head and Neck Surgery and.
Allergy & Rhinology (Providence, R.I.)
|June 18, 2013
Summary
The central Onodi cell, a rare anatomical variation, is described. Recognizing this posterior ethmoid cell variation is crucial for preventing injury to the optic nerve and internal carotid artery during surgery.
Area of Science:
- Otolaryngology
- Neurosurgery
- Anatomy
Background:
- The Onodi cell is a posterior ethmoid air cell extension.
- It is anatomically related to critical neurovascular structures.
- Preoperative identification is vital for surgical safety.
Purpose of the Study:
- To describe a previously unreported anatomical variation: the central Onodi cell.
- To highlight its unique position superior to the sphenoid sinus with optic canal involvement.
- To provide imaging examples of this variation.
Main Methods:
- Review of radiographic imaging.
- Analysis of endoscopic sinus surgery findings.
- Anatomical description of the central Onodi cell variation.
Main Results:
- Identification of a central Onodi cell variant.
- This variant features a posterior ethmoid cell superior to the sphenoid sinus.
- The variation includes at least one optic canal bulge.
Conclusions:
- The central Onodi cell represents a novel anatomical variation.
- Awareness of this variation is essential for surgeons.
- It aids in preventing iatrogenic injury to the optic nerve and internal carotid artery.
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