Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A right pleural catheter whose pigtail appears stretched or partly uncoiled appears unchanged , although it is very likely still within the right pleural space . The left costophrenic sulcus is partly excluded . However , aside from streaky minor atelectasis at the left lung base , the visualized left lung appears clear . There is probably a trace pleural effusion on the right . There is no evidence for persistent pneumothorax on this examination . A vague opacity along the right lateral chest wall appears similar allowing for differences in technique and probably reflects atelectasis or perhaps trace loculated fluid .
    OUTPUT:
    
No evidence of pneumothorax . No significant change in position of right pleural catheter .