Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is near complete opacification of the right lung with minimal aeration of the right upper lobe at the level of the carina . In the absence of midline shifts this likely represents a combination of a large pleural effusion and near complete collapse of the right lung , markedly increased from the prior study of ___ . Superimposed areas of consolidation can not be excluded . There is a small left pleural effusion . The left heart border is unremarkable and there is no pulmonary edema or pneumothorax .
    OUTPUT:
    
Near complete opacification of the right lung most likely representing marked enlargement of a right pleural effusion with near complete collapse of the right lung .