Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are normal . There is no pneumothorax or large pleural effusion . The lungs are well expanded with mild left basilar atelectasis . Overall the lungs are improved compared to the most recent prior study . There is no focal consolidation concerning for pneumonia . Median sternotomy wires are noted . There are no acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary process .