Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest radiograph obtained . Port - A - Cath resides over the right chest wall with catheter tip extending into the expected location of the superior vena cava . The lungs are clear bilaterally without focal consolidation , effusion , or signs of pneumothorax . Upper lobe lucency is compatible with known emphysema . The heart and mediastinal contours appear normal . Bony structures are intact . There are old right rib cage deformities again noted .
    OUTPUT:
    
Emphysema without superimposed pneumonia .