Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right - sided internal jugular catheter is in - situ , the tip terminates in knee right atrium , this could be withdrawn 3 cm to be positioned in the SVC . A linear metallic density projects over the left hemi thorax , unchanged compared to the prior study . A presumed to be external to the patient . There is in the left basilar airspace opacity with partial silhouetting of the left hemidiaphragm . This may reflect atelectasis or consolidation . No other areas of concern for consolidation are seen . No definite pleural effusion . No pneumothorax . The visualized bony structures are unremarkable in appearance .
    OUTPUT:
    
New left basilar airspace opacity may reflect atelectasis versus infection . A right internal jugular catheter is positioned within the right atrium , this could be withdrawn 3 cm .