Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP portable upright chest radiograph obtained . Elevated right hemidiaphragm is again noted . The known pulmonary nodules are subtle but re-demonstrated with the largest of these noted in the left and right upper lungs . There is no superimposed consolidation , effusion , or pneumothorax . The heart and mediastinal contours are stable . Bony structures are intact .
    OUTPUT:
    
Known pulmonary nodules are poorly assessed . No superimposed pneumonia .