Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: PA and lateral views of the chest provided , demonstrate a right arm PICC line with its tip at the level of the cavoatrial junction , unchanged from prior . Lungs are clear . No pneumothorax or effusion . Cardiomediastinal silhouette normal .
    OUTPUT:
    
Unchanged position of right arm PICC line with tip residing at the cavoatrial junction .