Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lungs are hyperinflated but clear . The cardiomediastinal silhouette , hilar contours , and pleural surfaces are within normal limits . There is no pleural effusion or pneumothorax . Degenerative changes are seen at the bilateral acromioclavicular joints .
    OUTPUT:
    
Hyperinflated lungs without acute cardiopulmonary process .