Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Cardiomediastinal silhouette and hilar contours are unchanged from immediate prior exam . Lung volumes are low with layering bilateral pleural effusions and associated bibasilar atelectasis . Right retrocardiac opacity may be due to atelectasis ; however , infection can not be excluded in the appropriate clinical circumstance . A left PICC is unchanged with the tip projecting over the mid-to - low SVC . There is no pneumothorax .
    OUTPUT:
    
Low lung volumes with layering bilateral pleural effusions and bilateral retrocardiac opacities which may be due to atelectasis ; however , infection can not be excluded given the appropriate clinical circumstance .