PARANASAL SINUS DISEASES AND FUNCTIONAL ENDOSCOPIC SINUS SURGERY
Sinus structures, also called paranasal sinuses, are 4 pairs of air spaces located within the facial bones and each is named along with the bone structures in which they are located (maxillary, ethmoid, frontal and sphenoid sinuses). The sinuses, which are partially present at birth, are almost completely developed around the age of 12-14. It…