Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Diffuse bilateral nodular opacities are seen throughout the lungs compatible with metastases . When compared to most recent prior there is more dense right basilar opacity which could represent superimposed infection . Cardiomediastinal silhouette is stable . Right Port - A - Cath is again seen .
    OUTPUT:
    
More dense right basilar opacity superimposed on diffuse metastatic disease . Findings could represent an effusion , atelectasis and / or superimposed infection .