Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Portable AP upright chest film ___ at 07 :36 is submitted .
    OUTPUT:
    
The left basilar pigtail catheter remains in place with some surrounding lateral pleural thickening . Residual streaky opacities at the left base likely reflect scarring or subsegmental atelectasis . The right lung remains clear . Overall cardiac and mediastinal contours are stable . No pneumothorax is seen .