Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable view of the chest . When compared to previous exam again seen is dense opacity in the right lung which has slightly progressed since prior with less aerated lung in the mid to lower regions . Underlying opacity is likely due to combination of known pleural - based metastatic disease noting new parenchymal opacity can not be assessed . The left lung remains grossly clear . Widening of the upper mediastinum is in part due to medial pleural - based metastases . Cardiac silhouette can not be assessed . No acute osseous abnormality detected .
    OUTPUT:
    
Interval mild progression of disease in the right hemithorax with less aerated right lung compared to prior . This is in part due to pleural - based metastatic disease noting that evaluation for a new parenchymal consolidation can not be assessed . Left lung remains clear .