Pulmonology is related to diagnosing and treatment of diseases affecting the respiratory system that includes the nose, mouth, pharynx, larynx, trachea, bronchi, alveoli, lungs, and the respiratory muscles. This medical speciality deals with any disorders that affect the lungs, airways, or respiratory muscles. Comprehensive pulmonary medicine programs include specialized treatment of diseases such as asthma, chronic obstructive pulmonary, sleep disordered breathing, intestinal lung disease, cystic fibrosis, occupational lung diseases, pulmonary rehabilitation, tuberculosis, lung cancers and a dedicated smoking cessation program.