Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Post left upper lobectomy . There is moderate pneumothorax at the left apex . There is likely small amount of hemorrhage adjacent to suture lines . Left pleural tube is seen draped over the apex of the lung . The right lung is unremarkable . The heart is chronically enlarged .
    OUTPUT:
    
Moderate left pneumothorax after upper lobectomy .