Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lower lung volumes are seen on the current exam . There are however new progressive parenchymal opacities , most confluent at the right lung base with air bronchograms . Additional parenchymal opacities regions seen in the bilateral perihilar regions suspicious for pulmonary edema . Moderate cardiac enlargement is similar to prior . Tracheostomy tube is again noted . No acute osseous abnormalities .
    OUTPUT:
    
Dense right basilar opacity suspicious for pneumonia superimposed on pulmonary edema versus multifocal pneumonia .