Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest are compared to previous exam from ___ . Again seen is a right - sided pleural effusion which partially tracks within the minor fissure . Small left - sided effusion is now also seen . There are increased parenchymal opacities , particularly at the right lung base more so than that at the left . Surgical clips again seen at the thoracic inlet . Aortic arch calcifications are noted . Cardiomediastinal silhouette is unchanged .
    OUTPUT:
    
Persistent right - sided pleural effusion . Small left pleural effusion . Increased opacities at the lung bases particularly on the right likely due to superimposed infection given interval change since recent exam . Recommend repeat after treatment to document resolution .