A few fibrous foci in the middle lobe of the right lung can be treated with antibiotics if they are caused by a recent infection, no special treatment is needed if they are caused by old foci, and they need to be regularly reviewed or puncture biopsy if they are caused by a lung tumor. 1. Recent infection: If the streak-like hyperdense shadow is caused by recent infection, it can be treated with antibiotics under doctor’s instruction. 2. Old foci: If the old foci are left after the healing of tuberculosis or lung infections, or after the healing of lung tissue injuries, no special treatment is usually needed. Fibrous foci in the lungs are benign lesions, and a few fibrous foci have no obvious effect on lung function and body. 3. Lung tumors: If the fibrotic lesions in the lungs exist for a long time or show signs of expansion, it is necessary to be alert to the risk of cancer, and it is recommended that chest X-ray or chest CT be regularly reviewed to observe the development of the disease, or a puncture biopsy should be performed to clarify the nature of the lesion, and then treatment should be given to the symptomatic condition. If the patient develops uncomfortable symptoms, he/she should consult a doctor in time and actively cooperate with the treatment.