hello welcome to HCM, i had gone through your chief complains and when i found patients with similar history, i was treating them with following treatment Scar tissue formation in the lungs is termed as pulmonary fibrosis. Fibrosis has lots of meaning but here is scarring. Scarring is not a diseases but it is an abnormal healing of the damage tissue of the lungs. 1. Doctors choose first line of treatment as corticosteroid. Corticosteroid such as Prednisolone is most effective drug in pulmonary fibrosis. 2. • Immunosuppressant agents Most effective drugs are cyclophosphamide and azathioprine 3. • Surgical treatment Lung transplantation – any patient with pulmonary fibrosis can refer for lung transplantation. It is well indicated in end stage fibrosis when all medical treatments were failed. Above stated all treatments give symptomatic relief. No one can remove scar tissue from the lungs. Fibrosis can not be cured but we can prevent further progression of the diseases. i think this may help you thank you