Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Slightly low lung volumes are again noted although mild pulmonary edema is seen . There is no confluent consolidation . Small right pleural effusion is unchanged from prior . The cardiac silhouette is moderately enlarged . No acute osseous abnormality is identified .
    OUTPUT:
    
Mild pulmonary edema and persistent right effusion , similar to prior .