The hairy edges of lung ground glass nodules are usually considered to be lung infection, tuberculosis, lung cancer, etc. Therefore, in the examination of the appearance of hairy edges of lung ground glass nodules. 1. Lung infection: Lung infection usually refers to the inflammation of the lungs that occurs in the end airways and alveolar cavities, which is usually caused by bacterial infection, fungal infection, etc. Patients may have symptoms such as coughing, coughing up sputum, chest pain, etc., and the rough edges of the PGNs may appear after examination in the hospital. 2. Tuberculosis: Tuberculosis is a chronic infectious disease caused by Mycobacterium tuberculosis, which is usually caused by respiratory tract infection, digestive tract infection, etc. Patients may have symptoms such as night sweating (sweating abnormally after going to sleep, but the sweating stops after waking up), fatigue, poor appetite, and lethargy, and so on, and therefore the rough edges of lung ground-glass nodules may appear on the checkup. 3. Lung cancer: Lung cancer mainly refers to primary malignant tumors occurring in the lungs, usually caused by smoking, long-term lung diseases, etc. Patients may have symptoms such as low-grade fever, chest pain, tightness of breath, etc., so that the rough edges of lung ground-glass nodules may appear in the examination. Patients should identify the cause of the disease under the guidance of the doctor and actively cooperate with the treatment.