Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without consolidation or edema . There is no pleural effusion or pneumothorax . The cardiomediastinal silhouette is normal . There is slight loss of height in several upper thoracic spine vertebral bodies , which is unchanged from prior exam . Mild to moderate degenerative changes are noted throughout the visualized spine .
    OUTPUT:
    
No acute cardiopulmonary process .