Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: One portable erect AP view of the chest . The left PICC line now ends in the low SVC . The lungs are clear . The heart size is normal . Mediastinal and hilar contours are normal . No pleural effusion or pneumothorax .
    OUTPUT:
    
Left PICC line now ends in the low SVC . Otherwise , unchanged compared to study done 2 .5 hours earlier .