 Introduction Concha bullosa is one of the common anatomical variant in which there is middle turbinate pneumatization. Few literatures states that one of the recognised cause of sinus disease and nasal septal deviation is enlargement of middle concha by pneumatization. Other such studies states that there are no such correlation of concha bullosa with chronic sinusitis. In this study we are evaluating the correlation of concha bullosa with septal deviation and chronic sinusitis and to find their statistical association.  Aim To determine the incidence of concha bullosa in 100 consecutive radiological paranasal sinus examination.  Objective To analyze the incidence of concha bullosa and to find out the radiological changes in paranasal sinuses in association with concha bullosa and to find its correlation with chronic sinusitis and nasal septal deviation.  Methodology A review of 100 paranasal sinus CT examination was done to evaluate the incidence of concha bullosa and also evaluated for presence of any chronic sinusitis and deviated nasal septum. The incidence of concha bullosa is analyzed and their association with chronic sinusitis and nasal septal deviation is analyzed using chi square test to know their statistical significance.  Results The incidence of concha bullosa was found to be 39%. There was a significant correlation between concha bullosa and deviated nasal septum, but there is no such statistical correlation between concha bullosa and chronic sinusitis.