Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Retrocardiac opacity has improved since the prior , probably related to improved inspiration . Linear opacities in the left lower lobe are chronic and likely scarring . The right lung is clear . Cardiac size is top - normal . Moderate to severe scoliosis convex to the right .
    OUTPUT:
    
No new focal consolidation , improving retrocardiac opacity can be resolving atelectasis .