Anatomical variations of the ethmoidal roof: differences between men and women.
AIM
During the paranasal sinuses surgery different complications may occur, both vascular and bony. The objective of the present study was to evaluate the ethmoidal roof configuration through the Keros and Yenigun classifications, analyzing results stratified by gender and side.


MATERIALS AND METHODS
We retrospectively analyzed 120 high-resolution computed tomography paranasal sinus study images and measured the depth of the cribriform plate in a coronal view and the anterior-posterior length in a cross section.


RESULTS
The Keros Type II was the most frequent and no statistically significant difference was found when comparing by gender. Yenigun type I was more prevalent, and a statistically significant difference was found between men and women in types I and II (p = 0.010 and p = 0.049, respectively). Statistical difference was observed in anterior-posterior means in the comparison between both classifications. In both, right and left side for men (p = 0.003 and p = 0.05) and women (p = 0.029 and p = 0.039).


CONCLUSION
We demonstrate the morphological variability that exists in this region. Gender differences that must be considered by the surgeon to avoid complications. Further studies are needed to evaluate the value of these findings when predicting surgical complications. A CT before PNS surgery is already widely accepted.
['Muñoz-Leija|Milton Alberto|MA|', 'Yamamoto-Ramos|Masao|M|', 'Barrera-Flores|Francisco Jesús|FJ|', 'Treviño-González|José Luis|JL|', 'Quiroga-Garza|Alejandro|A|', 'Méndez-Sáenz|Marco Antonio|MA|', 'Campos-Coy|Mario Alberto|MA|', 'Elizondo-Rojas|Guillermo|G|', 'Guzmán-López|Santos|S|', 'Elizondo-Omaña|Rodrigo Enrique|RE|']
D000328:Adult D003430:Cross-Sectional Studies D005004:Ethmoid Bone D005260:Female D006801:Humans D008297:Male D008875:Middle Aged D010254:Paranasal Sinus Diseases D012189:Retrospective Studies D012737:Sex Factors D014057:Tomography, X-Ray Computed
Ethmoidal roof Keros Yenigun Computed tomography Morphology Anterior ethmoidal artery