Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Lung volumes are again low , accentuating the cardiac silhouette and causing some bronchovascular crowding . Side port of the NG tube is below the GE junction . Right PICC tip is in the lower SVC . Right basilar atelectasis has improved since prior . Retrocardiac opacity has also improved since prior . There is no effusion or pneumothorax . Imaged osseous structures are intact . No free air below the right hemidiaphragm is seen .
    OUTPUT:
    
Right basilar atelectasis has improved since prior . Retrocardiac opacity , which likely represents atelectasis and possibly a component of pneumonia , also appears slightly improved compared to prior .