Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Prior right central venous catheter is no longer visualized . There is a persistent retrocardiac opacity best seen on the lateral view . The lungs are hyperinflated . There is no new consolidation . The cardiomediastinal silhouette is stable . No acute osseous abnormalities . Mid thoracic compression deformity is as previously seen .
    OUTPUT:
    
Persistent dense left basilar opacity compatible with pneumonia , not progressed since prior and no new consolidation .