Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . The aorta is mildly tortuous but unchanged . The mediastinal and hilar contours are similar , and no pulmonary vascular congestion is present . Lungs remain hyperinflated with flattening of the diaphragms . Blunting of the costophrenic angles posteriorly on the lateral view appears chronic , and could reflect pleural thickening . No large pleural effusion or pneumothorax is present . Linear opacities in the lung bases likely reflect areas of scarring or subsegmental atelectasis . No focal consolidation is identified . There are mild degenerative changes in the thoracic spine . Osseous structures are diffusely demineralized .
    OUTPUT:
    
Lung hyperinflation suggestive of COPD with bibasilar atelectasis or scarring .