Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiomediastinal and hilar contours are stable . There is the appearance of worsening right lung opacification ; however , this is likely due to patient 's supine position . The remainder of the chest radiograph is stable . Pigtail catheter still remains with tip in the right lung base .
    OUTPUT:
    
Stable chest radiograph .