Most of the lung inflammation is common pneumonia, lung infection, when it does not go down, it may become chronic infection foci, there may also be residual cords or nodules, these things it is equal to scar-like tissue, because the lung is directly external, the accumulation of months and days will often be stimulated by pollutants, or some people often smoke, may lead to these things will evolve into tumors. evolve into tumors, it’s just possible, the more pollution you get, the more likely this is, plus there are other lesions that cause the lungs to not be able to effectively drain sputum, it’s all possible. The greater the possibility is that the residual lung chronic infection foci, cords, nodules, which may further infect, multiply in volume or cords, chronic infection foci become larger, these will affect lung function, often may appear before the appearance of tumor, lung function will decline, this is what should be actively noted, and in the treatment of chronic infection foci or fibrous scar lesions, need to do when the pulmonary rehabilitation The process of lung clearing can also prevent infection and malignancy to the greatest extent possible, so pulmonary rehabilitation should be done when there is chronic inflammation of the lung that does not go down.