Multiple patchy ground-glass shadows seen in both lower lungs may be related to lung infection, lung cancer, autoimmune disease, and old lesions.
1. Lung infection is the most common cause, including bacterial, viral, Mycobacterium tuberculosis, fungal and other infections, which cause patchy ground-glass shadow due to inflammation exudation, edema, tissue destruction, proliferation and damage to local tissues of the lungs.
2. Lung cancer, due to malignant tumor primary foci or metastatic foci, the density of lung tissue increases locally, and at the same time, due to the blurring of the boundaries of the foci, it is manifested as patchy ground-glass shadow.
3. Autoimmune diseases, such as rheumatoid arthritis and systemic lupus erythematosus, can cause exudation and inflammatory reaction in lung tissues, which can be manifested as patchy ground-glass shadow.
4. Old foci, due to previous lung infections, tuberculosis, trauma, bleeding, etc., after recovery, resulting in scarring of the lung tissue or fibrosis, which is manifested as patchy ground-glass shadows on imaging.
The specific cause of the disease should be clarified after the completion of relevant examinations and tests, and the treatment should be in accordance with the doctor’s instructions.