“…12,[18][19][20][21][22][23][24][25] Knowledge of the complex anatomy of the skull base and its anatomical landmarks, including the ethmoidal fovea, the lateral lamella of the cribiform plate, and the course of the anterior ethmoidal artery is essential to prevent the complications of nasal endoscopic surgery. 12,15,20,21,26 Computed tomography 22 (CT) has helped not only to evaluate nasosinusal disease, but also to characterize the anatomy of the paranasal sinuses. 22,[27][28][29][30] The coronal plane, in particular, is considered as a map for assessing the anatomy that varies significantly even between both sides in the same individual; this may alert about areas of potential complication risk in nasal endoscopic surgery.…”