Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is mild central pulmonary vascular congestion . Patchy opacity is again seen in the right mid lung , possibly in the superior segment of the right lower lobe , similar in distribution compared to prior studies , possibly slightly more conspicuous , and an acute component is not entirely excluded . No pleural effusion or pneumothorax is seen . The cardiac silhouette is top - normal . Mediastinal contours are grossly stable compared to prior studies .
    OUTPUT:
    
Mild central pulmonary vascular congestion . Again demonstrated patchy opacities in the superior segment of the right lower lobe slightly more conspicuous as compared to the prior study , an acute component not excluded .