Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs demonstrate well - expanded and clear lungs . Widened upper mediastinum is stable since ___ . There is no pleural effusion or pneumothorax . Indwelling right - sided internal jugular double - lumen catheter identified with its tip terminating in the mid superior vena cava .
    OUTPUT:
    
No findings to suggest infection .