Lung proliferative foci generally do not need treatment, lung proliferative foci is previously infected with viruses or bacteria and other pathogens, after a certain amount of treatment after the improvement, of course, can also be self-improvement of some of the fibrous streaks left behind, this kind of foci of higher density, the body can not be completely absorbed. Generally these foci will not cause obvious symptoms, such as coughing, coughing up sputum, hemoptysis, etc. If the physical examination found the proliferation of lung foci do not need treatment, can be regularly reviewed. Of course, there are a very small number of people can be complicated by coughing, coughing up sputum, hemoptysis and other symptoms, if there are clinical symptoms need to be treated.