Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The heart is mildly enlarged . The mediastinal and hilar contours appear unchanged . Mild prominence of the right hilum appears unchanged . As seen previously , there are asymmetric interstitial opacities in the right lung with peribronchial cuffing and a particularly heavy concentration of these about the right hilum , but not significantly changed since the recent prior radiographs . There is no pleural effusion or pneumothorax . There is no evidence for free air . Mild rightward convex curvature is noted at the thoracolumbar junction . A stent projects over the right upper quadrant in a similar position .
    OUTPUT:
    
Stable appearance of the chest . No evidence of free air .