Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The cardiac , mediastinal and hilar contours appear unchanged . There is a persistent opacity in the medial segment of the right middle lobe with volume loss , probably unchanged since prior examinations . Subpleural opacity at the right lung apex appears also probably unchanged . There are no pleural effusions or pneumothorax .
    OUTPUT:
    
Similar small chronic opacities with no definite superimposed acute process .