Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: The left PICC is unchanged in position from the prior radiograph and terminates at the approximate location of the cavoatrial junction . However , given the patient 's recent episodes of NSVT , the line may be retracted up to 2 cm to ensure that it is not in contact with the right atrium . The lungs are clear . There is no pneumothorax or pleural effusion . The hilar and cardiomediastinal contours are normal . Pulmonary vascularity is normal .
    OUTPUT:
    
1 . Unchanged left PICC position terminating at the estimated location of the cavoatrial junction . This line may be retracted up to 2 cm to see if the patient 's arrhythmia resolves . 2 . Otherwise , normal radiograph of the chest .