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Paranasal sinus bony anatomic variations and mucosal abnormalities: CT analysis for endoscopic sinus surgery
W E Bolger1, C A Butzin, D S Parsons
1Department of Otolaryngology-Head and Neck Surgery, Wilford Hall USAF Medical Center, Lackland AFB, Texas 78236-5300.
The Laryngoscope
|January 1, 1991
Summary
Coronal CT scans reveal common bony variations (64.9%) and mucosal abnormalities (83.2%) in paranasal sinuses. These findings are frequent even in patients without sinus issues, aiding clinical interpretation.
Area of Science:
- Radiology
- Otolaryngology
- Anatomy
Background:
- Coronal CT scanning significantly enhances paranasal sinus imaging compared to radiographs.
- Subtle bony variations and mucosal abnormalities are increasingly detected.
- Understanding background prevalence is crucial for clinical relevance.
Purpose of the Study:
- To analyze the prevalence of bony anatomic variations and mucosal abnormalities in paranasal sinuses using coronal CT.
- To provide data on the
- background
- prevalence of these findings.
Main Methods:
- Detailed analysis of coronal CT scans from 202 consecutive patients.
- Focused identification of specific bony variations: middle turbinate pneumatization/curvature, Haller's cells, uncinate process pneumatization.
- Assessment of mucosal abnormalities.
Main Results:
- Bony anatomic variations detected in 131 (64.9%) of 202 patients, with similar frequency in sinus and non-sinus groups.
- Mucosal abnormalities found in 168 (83.2%) of 202 patients.
- Higher prevalence of mucosal abnormalities (92.2%) in patients with sinus complaints, predominantly in the anterior ethmoid.
Conclusions:
- Coronal CT reveals high prevalence of paranasal sinus bony variations and mucosal abnormalities.
- Findings suggest many variations and abnormalities may be incidental, requiring careful interpretation.
- This data assists otolaryngologists and radiologists in evaluating sinus CT scans.