Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Diffuse opacity in bilateral lungs in predominantly central distribution are slightly increased compared to ___ . Small to moderate right pleural effusion is slightly increased . Small left pleural effusion is stable . Cardiomediastinal silhouette is enlarged , similar to before .
    OUTPUT:
    
Pulmonary edema is worse compared to ___ . It is difficult to exclude other causes of diffuse airspace disease such as widespread infection and hemorrhage in the appropriate clinical settings . Small to moderate right pleural effusion is slightly increased . Small left pleural effusion is stable .