Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Again the tracheostomy tube appears to project over the midline . There is stable extensive subcutaneous emphysema in the lateral chest wall , pectoralis muscles and cervical regions bilaterally . Diffuse unchanged reticulonodular interstitial process with a more focal airspace confluent opacity at the right apex appears stable compared to the prior exam . There has been slight interval improvement in the previously noted pneumothorax . There are stable small bilateral pleural effusions . There is stable pneumoperitoneum .
    OUTPUT:
    
Tracheostomy tube appears to project over the midline .