Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest . There is persistent small left - sided pleural effusion . There is mild pulmonary vascular congestion but no confluent consolidation . The cardiac silhouette is slightly enlarged but unchanged . No acute osseous abnormalities detected .
    OUTPUT:
    
Small left pleural effusion and mild pulmonary vascular congestion .