Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP upright and lateral views of the chest were provided . Metallic fragments are seen projecting over the left lower lung , question retained foreign body . There is no central venous catheter identified . The lungs appear clear of consolidation , effusion or pneumothorax . Cardiomediastinal silhouette is normal . Bony structures appear intact . On the lateral view , there is a metallic stent projecting over the region of the axilla , though it is unclear if this is in the left or right .
    OUTPUT:
    
Dialysis catheter not visualized . Metallic fragmentation in the left lower lung .