Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: AP view of the chest provided . There is no appreciable pleural effusion . Persistent atelectasis of the right lung base is again seen . Left lung base opacity is more clear . Of note , lucent line in the superolateral aspect of the right lung is most likely a skin fold and should not be mistaken for a pneumothorax . Right - sided pigtail catheter is in satisfactory position .
    OUTPUT:
    
No significant interval change .