Due to the close proximity of the sphenoid sinus to the carotid artery and the optic canal, it is very important for surgeons to know the anatomical features and variations of the sphenoid sinus ...

It is well known that the region of the nasal sinuses—frontal sinuses, ethmoidal sinuses, sphenoidal sinus, and maxillary sinuses—is closely connected to the trigeminal nerve. The instillation ...