Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs may be overinflated , reflected in flattening of the hemidiaphragms . Nipples -- ___ over sixth anterior rib , left over fifth anterior interspace --___ not be mistaken for lung nodules . Left lung is clear . Heart size is normal . Small pleural effusions could be present .
    OUTPUT:
    
1 . Possible chronic obstructive airways disease . 2 . Possible small pleural effusions .