Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiac silhouette size is normal . The mediastinal and hilar contours are unchanged . Lungs are hyperinflated without focal consolidation . Bronchiectasis within the lung bases and previously seen scattered inflammatory pulmonary nodules are better appreciated on the prior CT . Patchy atelectasis or scarring is noted in both lung bases without focal consolidation . No pleural effusion or pneumothorax is present . Mild degenerative changes are seen in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary abnormality .