Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral chest radiographs were obtained . There is improvement in aeration of the right upper lobe , though a large right pleural effusion remains . There is continued volume loss in the right lower lobe . A right perihilar opacity is again visualized , and corresponds to the patient 's known mass , better assessed on CT from ___ . Multiple nodules are again seen in the left lung , consistent with known metastatic disease . The left lung is free of pleural effusion . There is no pneumothorax . Mediastinum is midline . Heart size is difficult to assess due to parenchymal abnormalities .
    OUTPUT:
    
Improved aeration in right upper lobe , however , a persistent large right pleural effusion remains with right lower lobe volume loss .