Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a subtle right retrocardiac opacity which corresponds with opacities seen over the thoracic spine on the lateral which may represent early or resolving infection . There is no pleural effusion or pneumothorax . Cardiomediastinal silhouette is normal . Osseous structures are unremarkable .
    OUTPUT:
    
Subtle right lower lobe opacities may represent early or resolving pneumonia .