Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A tracheostomy tube is present . The tip of the right PICC line extends to the right atrium . Surgical clips are again noted to project over the right peripheral mid lung . Chain sutures are noted in both upper lung zones . A lucency projecting over the right lung base likely corresponds to a pneumothorax that has been present since at least the CT scan of the chest dated ___ . This is the left likely reflect a pneumoperitoneum . No significant interval change in the right hilar and mid lung zone opacities . The left lung is clear .
    OUTPUT:
    
Right basal pneumothorax is relatively stable since the radiograph from earlier today , and has been present since at least ___ .