Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear . No obvious effusion or pneumothorax based on a supine film . The cardiomediastinal silhouette is within normal limits . Mid left clavicular fracture is mildly displaced . No other displaced fractures identified .
    OUTPUT:
    
Mid left clavicular fracture . No definite acute cardiopulmonary process .