Tomographic-anatomical study of the frontal recess in peruvian patients

Abstract

Introduction: The frontal sinus evacuates its contents through the frontal recess, which is surrounded by frontoethmoidal
air cells. Among the reasons for failure in endoscopic sinus surgery is incomplete clearance of diseased air cells around the
frontal recess. Detailed knowledge of the tomographic-anatomical variants within the frontal recess is essential. Objective:
To evaluate the frequencies of tomographic-anatomical variants within the frontal recess in a sample of patients from
Peru during 2022. Materials and Methods: A retrospective cross-sectional descriptive observational study in which 201
paranasal sinus tomographies were evaluated, including the evaluation of 402 frontal sinuses and their recesses, which
were taken from the year 2022. Results: The most common frontoethmoidal cell was the agger nassi cell with a frequency
of 98. 5%, while the least common was the supra agger frontal cell (13.9%). The anterior ethmoidal artery was evident
as pendant in 61.7% and the most frequent AP distance on the right side was <5 mm and on the left side it was 5mm-
10mm. Conclusions: To safely perform a surgical approach to the frontal sinus, tomographic and anatomical knowledge
of the frontal recess is essential due to the different variants that are common in our Peruvian population. This work will
contribute to a better understanding by Peruvian surgeons of this region, which is difficult to access surgically.ontribute to
a better understanding among Peruvian surgeons of this region studied, which is difficult to access surgically.