Resolution of otitis media with effusion in the study group (%) was significantly higher than that in the control group (%) ( p < ). Forty-five patients (%) with adenoid hypertrophy in the study group showed a significant decrease in adenoid size according to the endoscopic evaluation compared to the control group ( p < ). A significant improvement in obstructive symptoms was seen in the study group ( p < ). The endoscopically measured adenoid/choana ratio and degree of obstructive symptoms showed a significant correlation ( r = p < , r = p < , r = p < , r = p < ). The adenoid/choana ratio improved significantly in atopic patients in the study group ( p < ), whereas in atopic patients in the control group there was no change ( p = ).