Thanks for your question on Health Care Magic. I can understand your concern. No need to worry for this parenchymal scarring because it is stable and not worsening as compare to previous x ray. Any lung insult whether tuberculosis, pneumonia or Pulmonary contusions heal by fibrosis and calcification. This appear as scarring on chest x ray. It is actually healing process and remains as it is through out the life. So no treatment is required because your scar lesion is stable. So no need to worry for this parenchymal scarring, it is nothing but healed, inactive lesions. Hope I have solved your query. Wish you good health. Thanks.