Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP and lateral views of the chest were provided . Bilateral lung masses are re-demonstrated in a similar pattern as on prior CT compatible with known metastatic disease . It is difficult to assess for subtle progression . No definite signs of superimposed pneumonia . Cardiomediastinal silhouette appears stable . Bony structures appear intact .
    OUTPUT:
    
Pulmonary metastatic disease . No convincing signs of superimposed pneumonia .