Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is no evidence of pneumothorax or acute , displaced right rib fracture on this chest radiograph examination . Heart size is normal . Lungs are overinflated but grossly clear . There are no pleural effusions .
    OUTPUT:
    
1 . No chest radiographic evidence of pneumothorax or acute , displaced rib fracture . If localizing symptoms persist , consider dedicated rib radiograph with metallic marker placement . 2 . Hyperexpanded lungs , suggesting the possibility of COPD .