Summarize the radiology report findings into an impression within 3 sentences.
    INPUT: Frontal and lateral views of the chest were obtained . The lungs are clear without focal consolidation , pleural effusion , or pneumothorax . Bibasilar atelectasis is seen . The known lung masses are better seen on prior CTs . The heart size is normal . The mediastinal silhouette and hilar contours are normal .
    OUTPUT:
    
No pneumothorax after lung biopsy .