Incidence of concha bullosa and its relationship to nasal septal deviation and paranasal sinus disease by CT

Aim To analyze the incidence of concha bullosa and its correlation with nasal septal deviation and paranasal sinus disease.Methods A total of 462 coronal CT scans were divided into the unilateral or dominant concha group and no unilateral or dominant concha group.The direction of nasal septal deviation was identified as the face of the convex surface.Results Overall,159(34.4%) patients had either a unilaterteral or dominant concha,and 303(65.6%) patients had either no concha or dominant concha.In the unilateral or dominant concha group,70.4% of patients had contralateral deviation of the nasal septum,73.0% of patients had some sinus disease.In the no unilateral or dominant concha group,55.1% of patients had contralateral deviation of the nasal septum,69.6% of patients had some paranasal sinus disease.There were statistical differences between the two groups in the presence of nasal septal deviation,and there were no statistical differences between the two groups in the presence of paranasal sinus disease.In the unilateral or dominant concha group,the patients who were not accompanied with the nasal septum deciation had more changces to have the paranasal sinus disease than the patients who were accompanied with the nasal septum deciation.Conclusion There is a strong association between the presence of a concha bullosa and contralateral deviation of the nasal septum.The increased incidence of the paranasal sinus disease exists in the patients who have the concha bullosa but not accompanied with the nasal septum deciation.