Thanks for your question on Health Care Magic. I can understand your concern. Yes, your scar can be mistaken as tuberculosis lesions and you may fail your medical on this basis. Any lung insult whether tuberculosis or pneumonia or Pulmonary contusions heal by following mechanism. 1. Fibrosis 2. Calcification 3. Bronchiectesis 4. Rarely complete resolution. First two are more common and it will remain as it is through out the life. So to prove that it is old, healed scar and not active lesion, you need to consult pulmonologist and get done CT thorax with Contrast and bronchoscopy with BAL (bronchoalveolar lavage) analysis. If both these are negative for tuberculosis or other infection, than you can argue with visa authority about not having active, infectious tuberculosis and your lesions are old, healed, fibrotic, inactive lesions. Hope I have solved your query. Wish you good health. Thanks.