Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal contours are normal . Bibasilar atelectasis larger on the left have increased on the left . Small left effusion has increased . There is no evident pneumothorax . There are low lung volumes . Left rib fractures are better seen in prior CT .
    OUTPUT:
    
Minimal increase in bibasilar atelectasis larger on the left and small left pleural effusion