Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: A large right upper lung opacity is not significantly changed in size compared to the outside hospital chest radiograph from ___ , corresponding to a 6 - cm right upper lobe mass on recent CT from ___ . The lungs are otherwise clear . The heart size is normal . The mediastinal contours are normal . There is no pneumothorax . No pleural effusions .
    OUTPUT:
    
No evidence of pneumothorax status post bronchoscopic biopsy of large right upper lobe mass .