Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomegaly and mediastinal silhouette are unchanged . There is minimal pulmonary vascular re-distribution improved compared to prior . The right lower lobe opacity has partially cleared . Right middle lobe opacity is also partially cleared . The old rib fractures and compression deformities are again visualized .
    OUTPUT:
    
Slight improvement in pulmonary appearance .