anatomic variations of paranasal sinus are inferior turbinate hypertrophy (17.57%), concha bullosa (45.95%), pneumatized superior turbinate (17.57%), pneumatization of the posterior nasal septum (43.25%), pneumatization of Cristae Galle (9.5%), septal deviation (47.3%), contact point between middle turbinate and septal (44.59%), Haller cell (17.57%), Agger nazi cell (33.78%) and Onodi cell (10.08%). The maxillary and the anterior ethmoid were the most commonly involved sinus.