Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Left internal jugular vascular catheter has been removed since the prior study . Postoperative alterations are again demonstrated , consistent with prior left upper lobe resection and right upper lobe wedge resection procedures . Blunting of the right costophrenic angle is longstanding and attributed to postoperative pleural thickening . Left costophrenic sulcus blunting is more likely due to pleural fluid given the recency of the left upper lobectomy one month prior . Stable postoperative appearance of cardiomediastinal contours . No acute skeletal findings .
    OUTPUT:
    
Status post left upper lobe resection with persistent small postoperative left pleural effusion .