Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are clear without focal consolidation . No pleural effusion or pneumothorax is seen . The cardiac and mediastinal silhouettes are unremarkable . Subtle suggestion of subcutaneous gas is seen projecting over the left supraclavicular region . No definite pneumomediastinum is seen .
    OUTPUT:
    
No definite pneumomediastinum seen . Clear lungs . Subtle suggestion of subcutaneous gas knee left supraclavicular region .