Few fibrous foci in both upper lungs can be treated without special intervention if they are asymptomatic, but if the fibrosis is large and affects respiratory function, it should be observed dynamically and operated if necessary. Fibrotic foci can occur in any part of the lungs, either multiple or single, and their main pathological process is metaplasia, exudation, proliferation, and finally fibrosis to form a stable scar. Typically, if the fibrous foci in the lungs are small, they have no effect on the patient and no intervention is required. Larger fibrous foci may affect the patient’s breathing, with symptoms such as chest tightness and shortness of breath, in which case they can be dynamically observed for changes, and surgical intervention can be performed if necessary.