Thanks for your question on Health Care Magic. I can understand your friend s situation and problem. Calcification on chest x ray is suggestive of old, healed, non active lesions. These are basically scar lesions from previous lung infection. They remain as it is life long. So for visa purpose, we need to prove that these lesions are not active infectious lesions. For these he need to consult pulmonologist and get done CT thorax with Contrast and bronchoscopy and BAL (bronchoalveolar lavage). If both are negative for active infection, than he cannot argue with visa authority about not having active, infectious disease and his lesions of chest x ray are old, inactive lesions. So consult pulmonologist and discuss all these. Hope I have solved your. Wish you good health. Thanks.