Mustard Lung disease and COPD disease have many similarities in terms of pathophysiology and mechanisms involved in this disease (1). Airways deformation is one of the major problems and late complications in veterans exposed to mustard gas. (1). Airways deformation mainly can be seen in the form of epithelial cell, fibrosis, epithelial damage and airway angiogenesis which its clinical symptoms are manifested in the form of reduced lung function and reduced pulmonary indexes (2). The patients mostly suffer from severe cough, shortness of breath, chest pain and too much confusion. It seems that the airways deformation occurs in due to tissue damage and frequent defective repairing the airways tissues. Some effective factors on the airways deformation
