Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: mild pulmonary vascular congestion is similar to prior . The cardiac and mediastinal silhouettes are similar in appearance . Hilar contours are similar . There is slight increase in opacity left lung bases may be due to atelectasis but consolidation due to infection or aspiration not excluded . Subtle irregularity of the anterior lateral right fourth and fifth ribs likely present on the prior study and not acute .
    OUTPUT:
    
Slight increase in opacity at the left lung base may be due to atelectasis , but consolidation due to infection or aspiration not excluded . Mild pulmonary vascular congestion , similar to prior . Subtle irregularity of the anterior lateral right fourth and fifth ribs likely present on the prior study and not likely acute . Correlate with site of point tenderness .