Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Stable right upper lobe opacification likely representing a combination of tumor infiltration and collapse . New opacifications of the bilateral lung bases , right greater than left , possibly representing lymphangitic spread of tumor versus superimposed infectious process . Left border of the cardiomediastinal and hilar structures is unremarkable . Right border is not well assessed due to opacification .
    OUTPUT:
    
Unchanged right upper lobe opacification . New bibasilar opacifications , right greater than left , likely represent tumor infiltrate versus infection .