Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal contours are normal . Aside from minimal atelectasis in the left lower lobe , The lungs are clear . The lungs are mildly hyperinflated . There is no pneumothorax or pleural effusion . The osseous structures are unremarkable
    OUTPUT:
    
No acute cardiopulmonary abnormalities