Old tuberculosis fibrosis indicates that the tuberculosis has healed, just like a scar left by a scab from a wound, a scar left by tuberculosis. Fibrosis is a manifestation of lesion repair and healing, caused by the replacement of previous TB lesions by fibrous tissue, and is a stable lesion that indicates that the patient had TB and was completely cured by anti-TB treatment or healed on its own without treatment. Any lesion of this nature indicates that the lesion has subsided, is not active, is not infectious, does not require treatment, is evidence of previous TB, and does not affect a person’s life expectancy. However, fibrosis has the potential to cause distortion of the surrounding bronchopulmonary tissue, leading to hemoptysis, or secondary bronchiectasis.