Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . There is no pleural effusion , pneumothorax , or focal airspace consolidation to suggest pneumonia . The cardiomediastinal silhouette is unremarkable . An old right rib deformity is again appreciated . Mild degenerative changes are noted at the acromioclavicular joints .
    OUTPUT:
    
No acute cardiopulmonary process .