Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single portable view of the chest . Left PICC is in stable position , tip in the mid SVC . There has been interval progression of the bilateral parenchymal opacities more so on the left which appears more confluent in the perihilar region most compatible with pulmonary edema . More dense retrocardiac opacity silhouetting the hemidiaphragm suspicious for superimposed effusion . Cardiac silhouette is enlarged but unchanged .
    OUTPUT:
    
Progression of pulmonary edema and persistent left effusion . Superimposed infection would be difficult to exclude .