Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Single AP upright portable view of the chest was obtained . A single - lead left - sided AICD is again seen with leads extending to the expected position of the right ventricle . A right - sided PICC is again seen , terminating in the low SVC . There is a linear density coursing over the left upper chest and curving downward parallel to the SVC , however , does not appear precisely within the SVC . Correlate with what this structure is ; query whether it is external to the patient , if not , may be arterial . These findings were discussed with Dr . ___ at 8 :45 p .m . on ___ via telephone , paged immediately after findings discovered , discussed with him approximately 20 minutes thereafter . There is minimal bibasilar atelectasis . No definite focal consolidation is seen . There is slight blunting of the left costophrenic angle which may be due to pleural thickening , but trace pleural effusion is not excluded . There is no evidence of pneumothorax . No focal consolidation . Patient is status post median sternotomy
    OUTPUT:
    
Query a left - sided line which does not clearly appear to be within the SVC and could be arterial or external to the patient . Correlate clinically . In discussion with Dr . ___ ___ , a repeat chest radiograph will be obtained after removal of external artifact .