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High-resolution computed tomography analysis of the frontal sinus ostium: a pilot study
Jean Anderson Eloy1, David M Neskey, Richard J Vivero
1Department of Otolaryngology-Head & Neck Surgery, University of Medicine and Dentistry of New Jersey-New Jersey Medical School, Newark, NJ 07103, USA. jean.anderson.eloy@gmail.com
Accurate measurements from the columella and anterior nasal spine (ANS) to the nasofrontal beak (NFB) and anterior skull base (ASB) are crucial for safe frontal sinus recess (FSR) exposure during endoscopic sinus surgery (ESS). Staying within specific distances from the columella can minimize intracranial complications.
Area of Science:
- Otolaryngology
- Neurosurgery
- Radiology
Background:
- Endoscopic sinus surgery (ESS) for frontal sinus recess (FSR) exposure presents challenges due to anatomical variations and proximity to critical structures.
- A thorough understanding of frontal sinus anatomy is essential to prevent intracranial complications.
Purpose of the Study:
- To establish reliable anatomical landmarks and measurements for safe FSR entry.
- To determine distances from the columella and anterior nasal spine (ANS) to the nasofrontal beak (NFB) and anterior skull base (ASB) using high-resolution computed tomography (HRCT).
Main Methods:
- Radiographic analysis of 32 sagittal HRCT scans.
- Measurements were taken from the ANS to the NFB and ASB, and from the columella to the NFB and ASB.
- Data analyzed by three observers to calculate mean distances and standard deviations.
Main Results:
- Significant differences in distances were observed between men and women (p<0.0001).
- Mean distance from ANS to NFB: 52.3mm (men), 47.7mm (women).
- Mean distance from columella to ASB: 67.9mm (men), 61.3mm (women).
Conclusions:
- Recommended safe distance from the columella for FSR exposure: <66.9mm (men) and <60.6mm (women).
- These measurements can aid surgeons in minimizing intracranial complications during ESS.
