Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left PICC with tip traversing superiorly 4 .5 cm into the right brachiocephalic vein . If the PICC was repositioned appropriately , then tip well ends in the lower SVC . No pneumothorax . Interval increase in small right pleural effusion with fluid seen in the major fissure and opacity in the right mid lung likely reflects either fluid in the minor fissure or atelectasis . New right lower lobe atelectasis . The cardiac and mediastinal silhouettes are unchanged . Vertebral fixation hardware is unchanged .
    OUTPUT:
    
Left PICC tip 4 .5 cm into the right brachiocephalic vein . If the PICC was repositioned appropriately , then tip well ends in the lower SVC . Increase in small right pleural effusion with right lower lobe atelectasis .