Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The lungs are well - expanded . A right chest wall port catheter tip terminates in the distal SVC . Subtle opacity in the right lower lobe only seen on the frontal projection may represent atelectasis however early infection is also possible . There is no pleural effusion or pneumothorax . The cardiomediastinal silhouette is enlarged but unchanged since prior studies . The imaged upper abdomen is unremarkable . Right acromioclavicular arthropathy is again noted . Otherwise bones are unchanged .
    OUTPUT:
    
Subtle right lower lobe opacity may represent atelectasis however early pneumonia is also possible . Stable cardiomegaly .