Pneumatization Pattern of the Frontal Recess: Relationship of the Anterior-to-Posterior Length of Frontal Isthmus and/or Frontal Recess with the Volume of Agger Nasi Cell
Clinical and Experimental Otorhinolaryngology
; : 76-83, 2010.
Article
in En
| WPRIM
| ID: wpr-205387
Responsible library:
WPRO
ABSTRACT
OBJECTIVES:
We analyzed the pneumatization pattern of the frontal recess (FR) in a Korean population. We also determined the correlation between the volume of the agger nasi cell (ANC) and the anterior-to-posterior (A-P) length of the frontal isthmus (FI) and FR.METHODS:
Multiplanar paranasal sinus computed tomography (CT) images from 105 patients who underwent endoscopic sinus surgery were reviewed. The prevalence of frontal recess cells (FRCs), thickness of the frontal beak (FB), volume of the ANC, A-P length of the FI, and FR were evaluated.RESULTS:
The ANC was identified in 96% of the patients and frontal cells (FCs) in 32% (FC type 1, 24.2%; type 2, 4.2%; type 3, 3.1%; and type 4, 0%). The prevalences of frontal bullar, suprabullar, supraorbital ethmoidal, and interfrontal sinus septal cells were 10%, 7.8%, 3.6%, and 6.8%, respectively. The A-P lengths of the FR and FI were 10.1+/-3.1 and 8.4+/-2.9 mm, respectively. The thickness of the FB was 7.8+/-1.8 mm and the volume of the ANC averaged 394.1+/-240.5 mm3. The thickness of the FB did not correlate with the volume of the ANC. In contrast, the A-P length of the FI and FR were positively correlated with the volume of the ANC.CONCLUSION:
ANCs and FCs were found in 96% and 32% of the cases in this series. FC type 4 was not seen. What appeared to be FC4 on conventional CT was identified as FBC from reconstructed parasagittal images. A large ANC increased the A-P length of the FI and FR, regardless of the thickness of the FB.Key words
Full text:
1
Database:
WPRIM
Main subject:
Beak
/
Prevalence
/
Tomography, Spiral Computed
/
Frontal Sinus
Type of study:
Prevalence_studies
Limits:
Animals
/
Humans
Language:
En
Journal:
Clinical and Experimental Otorhinolaryngology
Year:
2010
Document type:
Article