Thanks for your question on Healthcare Magic. I can understand your concern. Scar on chest x ray is suggestive of old healed lesions. You might be having tuberculosis or pneumonia in childhood which was cured by treatment. Healing in lungs take place by either fibrosis or calcification and both of these Scar lesions are permanent and life long. No treatment is required hence available for these scars because they are inactive, dead lesions. For visa purpose, you should get done CT thorax and bronchoscopy. If both these are negative for active infection, you can argue with visa authorities. So consult pulmonologist and discuss all these. Hope I have solved your query. I will be happy to help you further. Wish you good health. Thanks.