Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: In comparison the most recent prior , there is significant improvement in left - sided pleural effusion . Linear bibasilar opacities are most consistent with atelectasis . The cardiac silhouette is enlarged . The pulmonary vasculature is unremarkable . A right - sided PICC terminates in the mid to lower SVC . Left bronchial stent appears to be in stable positions since prior examinations .
    OUTPUT:
    
Improvement in left pleural effusion since recent prior .