Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Previously noted mild pulmonary edema has improved , but a large right pleural effusion has apparently increased in size with adjacent right middle and lower lobe lung opacification . A small left pleural effusion is also seen . The cardiac and mediastinal contours are unchanged with calcification of the aortic knob again seen .
    OUTPUT:
    
Resolving pulmonary edema . Increased large right pleural effusion , with adjacent right middle and lower lobe opacities , which may represent atelectasis with or without coexisting pneumonia .