Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . The cardiomediastinal silhouette is within normal limits . No acute osseous abnormalities . Leftward deviation of the trachea just above the thoracic inlet is likely in part positional as it had been closer to midline on recent prior exam . No acute osseous abnormalities .
    OUTPUT:
    
No acute cardiopulmonary process .