Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . The aorta is unfolded . Mediastinal and hilar contours are otherwise unremarkable . Pulmonary vasculature is normal . Lungs are hyperinflated . Blunting of the costophrenic sulci bilaterally may suggest chronic pleural thickening . There is streaky atelectasis in the left lower lobe . No focal consolidation , large pleural effusion or pneumothorax is present . There are no acute osseous abnormalities . Marked degenerative changes are seen involving both glenohumeral and acromioclavicular joints .
    OUTPUT:
    
Lung hyperinflation suggestive of underlying COPD . Streaky left basilar atelectasis .