Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The tip of the left PICC line projects over the superior cavoatrial junction . A spinal fixation device is in place . Low bilateral lung volumes with blunting of the left costophrenic angle which may reflect a small pleural effusion versus atelectasis . No pneumothorax identified . The size of the cardiac silhouette is within normal limits .
    OUTPUT:
    
The tip of the left PICC line projects over the superior cavoatrial junction .