Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are low . There has been interval increase in the cardiomediastinal silhouette and pulmonary vascular congestion compared with prior . Bilateral hazy opacities , worst in the lower lobes , are concerning for pulmonary edema , however superimposed pneumonia can not be excluded . Tiny pleural effusions are suspected .
    OUTPUT:
    
Bilateral hazy opacities , worse in lower lobes , are concerning for pulmonary edema , however superimposed pneumonia can not be excluded .