Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are hyperinflated but clear of consolidation . Linear opacity in the right mid to upper lung is compatible with scarring as well as changes of the posterior right ribs which are chronic . Blunting of the right lateral posterior costophrenic angle is chronic , potentially due to scarring or trace effusion . Blunting of the left posterior costophrenic angle suggests small pleural effusion . Cardiomediastinal silhouette is within normal limits . Prominent retrocardiac opacity on the right is compatible with a neo esophagus . No acute osseous abnormalities .
    OUTPUT:
    
New trace left pleural effusion . Otherwise , no significant interval change .