Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: There is a moderate - to - large left pleural effusion has increased since the previous exam . Again seen is a small right pleural effusion . There is new parenchymal opacity within the left upper lung zones concerning for pneumonia . Hazy opacity at the right lung base may represent layering pleural fluid however infection can not be entirely excluded . The cardio mediastinal silhouette is unchanged . The aorta is tortuous .
    OUTPUT:
    
1 . Moderate to large left pleural effusion increased since the prior exam . 2 . New parenchymal opacity in the left upper lung zone concerning for pneumonia . Followup imaging after treatment is recommended . 3 . Small right pleural effusion . Right lower lobe infection can not be excluded .