2016, Number 4
Tomographic analysis: prevalence of frontoethmoidal cells in Mexican patients of a tertiary care hospital
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ABSTRACTBackground: The paranasal sinuses have a complex anatomy, each one shows significant variation in size and position. The frontal sinus and its drainage, referred as frontal recess, are well known for their complex architecture.
Objectives: The objective of the study was to identify frontoethmoidal cells; determine their prevalence and distribution in Mexican patients of a tertiary care hospital.
Material and method: A retrospective, observational, cross-sectional and descriptive study was conducted over a two-year period in “Hospital Español de Mexico”.
Results: A total of 159 CT scans were analyzed; the agger nasi cell was found in 129 CT scans (81.13%), frontoethmoidal cell type 1 in 66 CT scans (41.50%), type 2 in 15 CT scans (9.4%), type 3 in 6 CT scans (3.77%) and nil type 4. The kappa index between both observers turned out to be 0.9516.
Conclusion: The Agger nassi cell has the highest prevalence in this area, followed by frontoethmoidal cell type 1. We can consider that the frontoethmoidal cells in their vast majority are bilateral, followed by a unilateral right-sided presence.
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