Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest were provided . A metallic foreign body is again seen projecting over the left upper lobe , more fully tracked with regards to location on a prior CT of the chest from ___ . No focal consolidation , effusion , or pneumothorax is seen . The heart and mediastinal contour appear unchanged . Bony structures are intact .
    OUTPUT:
    
Stable appearance of metallic foreign body in the left upper lobe , characterized on prior CT from ___ . No evidence of pneumonia or definite sign of mass .