Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Compared with the prior radiograph , the right upper lobe opacity now involves the right middle lobe , suggesting worsening of the pneumonia . Indistinctness of the pulmonary vessels suggests mild pulmonary congestion . The remainder of the study is essentially unchanged .
    OUTPUT:
    
1 . Interval worsening of the right upper lobe pneumonia , which now involves the right middle lobe . 2 . Mild pulmonary congestion .