Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Suture material in the left upper lobe is consistent with history of blebectomy . Small post surgical fluid collection is noted surrounding left upper lung . There is no pneumothorax or consolidation . Cardiomediastinal silhouette is normal size and unchanged . Left chest tube is in unchanged position .
    OUTPUT:
    
No notable interval change . No pneumothorax .