['To compare the size of the nasal septal body (SB) and inferior turbinate (IT) of subjects grouped by sex and age.', 'We measured SB and IT areas (in cm2) bilaterally in computed tomography (CT) sections of 150 para nasal sinuses from 72 males and 78 females.', 'The right and left SB areas were smaller in females than in males. In the s25-year-old group, the right IT (RIT) was significantly smaller in females than in males. In the 26-35 and 46-45 age groups, the right SB (RSB) was significantly smaller in females than in males.'] Do nasal septal body and inferior turbinate sizes differ in subjects grouped by sex and age?