Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear but hyperinflated , without focal consolidations to suggest pneumonia . There is no pleural effusion or pneumothorax . The heart size is normal and unchanged . The mediastinal silhouette is unremarkable . Multilevel degenerative changes are noted in the thoracic spine .
    OUTPUT:
    
No acute cardiopulmonary process .