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Frontal infundibular cells: pathway to the frontal sinus
Ozum Tuncyurek1, Murat Songu, Zehra Hilal Adibelli
1Department of Radiology, Ataturk Government Hospital, Aydın, Turkey.
Ear, Nose, & Throat Journal
|March 21, 2012
Summary
Frontal infundibular cells (FICs) are an uncommon but important anatomic variant impacting the frontal recess. Understanding FIC prevalence and types is crucial for safe endoscopic sinus surgery.
Area of Science:
- Otolaryngology
- Radiology
- Anatomy
Background:
- Frontal infundibular cells (FICs) are rare anatomic variants originating from anterior ethmoid pneumatization.
- These cells can extend into the frontal sinus ostium, potentially affecting frontal recess anatomy.
- Knowledge of FIC variants is essential for safe endoscopic sinus surgery.
Purpose of the Study:
- To explore the anatomy of the healthy frontal recess.
- To determine the prevalence of FICs in adults without frontal sinus disease.
- To describe different types of FICs based on established classification.
Main Methods:
- Retrospective chart review of 1,040 frontal recesses in 520 adults.
- Analysis of axial and coronal computed tomography (CT) data with sagittal reconstruction.
- Classification of FICs using the Bent and Kuhn system.
Main Results:
- FICs were identified in 167 patients (32.1%), either unilaterally or bilaterally.
- Type I FICs were most common (15.7%), followed by Type III (12.1%), Type II (3.8%), and Type IV (0.4%).
- The study highlights FICs as a potential, underemphasized cause of frontal sinus obstruction.
Conclusions:
- Frontal infundibular cells are a significant anatomic variant requiring attention in radiology and surgery.
- Clinicians should identify FICs on CT scans to aid surgical planning for frontal sinus procedures.
- Detailed understanding of FIC anatomy enables precise dissection and improves surgical outcomes.
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