Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are overinflated , with diffuse hyperlucency , flattening of the diaphragms , and widening of the retrosternal clear space . Streaky opacities in the right lower lobe are improved from prior examination . No pleural effusions or pneumothorax . Heart size is normal . Multilevel degenerative changes in the thoracic spine .
    OUTPUT:
    
1 . Resolving right lower lobe pneumonia . 2 . Chronic obstructive airways disease .