Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest provided . Left chest wall pacer device and right IJ access Port - A - Cath appear unchanged . A right chest tube remains in place . There are persistent bilateral pleural effusions , slightly decreased on the right and slightly increased on the left . Associated with the pleural effusions as compressive lower lobe atelectasis , difficult to exclude a superimposed pneumonia . The upper lungs appear well aerated . Heart size can not be assessed . Mediastinal contour is unchanged .
    OUTPUT:
    
Slightly decreased right effusion and slightly increased left pleural effusion . Compressive lower lobe atelectasis , though can not exclude pneumonia .