Analysis of the Agger nasi cell and frontal sinus ostium sizes using computed tomography of the paranasal sinuses.

Unlabelled: The Agger nasi cell (ANC) and the frontal sinus ostium (FO) are important structures that can influence the anatomy and physiology of the frontal recess. The aim of this study was to evaluate the presence and size of ANC and the FO and correlate them according to gender, race and among themselves.

Method: A prospective study with 40 patients who underwent CT of the paranasal sinuses with sagittal reconstruction.