Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperexpanded , consistent with the diagnosis of COPD . There is no pleural effusion , pneumothorax or focal airspace consolidation . The cardiac and mediastinal contours are normal . The hilar structures and pleural surfaces are unremarkable . There are no acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary process .