Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear stable . There is again mild chronic volume loss at the left lung base . Streaky opacities in the upper lungs appear unchanged . Right - sided rib deformities are also stable . There is no pleural effusion or pneumothorax .
    OUTPUT:
    
Stable appearance of the chest .