Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . There has been interval development of significant right mid to lower lung opacity which is likely in part due to an effusion with possible underlying consolidation or atelectasis . Patient 's known mass is also at the right lung base . There is also a rounded mass in the left lung base compatible with known malignancy . Cardiomediastinal silhouette can not be adequately assessed . Left chest wall port is seen with catheter tip in the region of the RA / SVC junction There is a rounded opacity projecting over the left lung base compatible with known mass .
    OUTPUT:
    
Interval development of right mid to lower lung opacity likely in part due to effusion with underlying consolidation and potentially atelectasis on top of patient 's known bibasilar masses .