Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A tracheostomy tube appears unchanged . A left internal jugular catheter again terminates in the upper superior vena cava . A feeding tube courses across the mediastinum to the left of midline . The heart again appears mildly enlarged . The mediastinal and hilar contours appear unchanged . A left infrahilar retrocardiac opacity with air bronchograms appears unchanged . Generalized bilateral opacification with small lucencies also appears unchanged since the prior study .
    OUTPUT:
    
Stable appearance of the chest .