Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided demonstrate the tip of the left arm PICC line residing in the low SVC and may be extending intot the cavoatrial junction . The lungs are clear without pneumothorax or effusion . Cardiomediastinal silhouette is normal . Bony structures intact .
    OUTPUT:
    
Low position of PICC line tip in the SVC , possibly at the cavoatrial junction . Retraction by 1 - 2 cm may result in more optimal placement .