Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Unchanged retrocardiac opacity , likely reflecting a combination of atelectasis / consolidation and pleural fluid . The right lung is clear . No pneumothorax identified . The size and appearance of the cardiomediastinal silhouette is unchanged . A feeding tube projects over the left upper quadrant .
    OUTPUT:
    
Persisting retrocardiac opacity , likely reflecting combination of atelectasis / consolidation and pleural fluid .