Is there a difference between pulmonary fibrosis and fibrotic foci?

Pulmonary fibrosis and fibrous foci are still different. Normal pulmonary fibrosis refers to diffuse interstitial lung disease. Pulmonary fibrosis often shows grid-like shadows, honeycomb-like shadows or net-like nodular shadows on chest CT, and even ground-glass shadows. Normal pulmonary fibrosis lesions are more localized and often represent localized fibrous strip-like lesions. Pulmonary fibrosis can cause patients to show cough, chest tightness and dyspnea. Moreover, many patients 'disease can progress gradually, and even cause severe respiratory failure, threatening life. However, pulmonary fibrosis, normally speaking, has no obvious impact on patients, and normally does not cause clinical symptoms. Normally, regular reexamination can be done, and there is no special treatment.