Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Two views were obtained of the chest . Right basilar pleural pigtail catheter has been removed . A meniscus / air fluid level at the right lower lung identifies an air - fluid collection in the medial right pleural space which is likely smaller than on the previous examination given improved visualization of the right heart border , though this may also be due to air within the collection . Right lung parenchymal opacities are similarly slightly improved . Trace pleural effusion is present on the left . The heart and mediastinal contours are left PICC an esophageal stent are unchanged .
    OUTPUT:
    
Unchanged to slight interval decrease in now air - fluid collection in the medial right pleural space and decrease of right basal parenchymal opacities with trace left pleural effusion .