Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Heart size is normal . The mediastinal and hilar contours are normal . The pulmonary vasculature is normal . No focal consolidation , pleural effusion , or pneumothorax . The hemidiaphragms are flattened and there is increased AP diameter of the chest . Intrathoracic air - fluid levels re-demonstrate hiatal hernia . Coronary calcifications .
    OUTPUT:
    
Signs consistent with overinflation of the lungs .