Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: 3 .9 x 5 .1 cm mass is in the left upper lobe . There is no pneumomediastinum or pneumothorax post biopsy . 2 - cm nodule is at the left lung base . Bibasilar atelectasis is mild . The patient had prior sternotomy and suture line in biapical region . Pleural effusion is small if any .
    OUTPUT:
    
There is no complication post left upper lobe mass biopsy . There is no pneumothorax or pneumomediastinum .