Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is mildly enlarged . Mediastinal and hilar contours are unremarkable . Pulmonary vasculature is not engorged . Linear opacities in the right lung base are compatible with areas of subsegmental atelectasis . Lungs appear hyperinflated . No focal consolidation , pleural effusion or pneumothorax is present . Scarring is noted in the lung apices . There are mild to moderate degenerative changes noted in the imaged thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .