What can cause pulmonary fibrosis?

Scarred Lungs: Pulmonary fibrosis is essentially scarring of the lungs. There are many different causes for the lungs to scar. The disease can be a long-term chronic problem however in certain cases if the underlying cause of scarring is not addressed, it can be fatal. Furthermore, idiopathic pulmonary fibrosis is almost uniformly fatal. Lung transplantation may be a final resort.