Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior radiograph , lung volumes are lower causing bronchovascular crowding and accentuation of the cardiac silhouette . However , there is no new focal consolidation , pleural effusion , or pneumothorax .
    OUTPUT:
    
Low lung volumes , causing bronchovascular crowding . However , no definite focal consolidation concerning for pneumonia .