When fibrous foci appear in the middle lobe of the right lung, most of the causes are due to the proliferation of fibrous tissues in the lungs of the patient, which leads to lesions, this is a relatively common lung disease, the symptoms can basically be restored to health after timely treatment. Clinical cases also appeared in a small number of patients, the lesion of fibrous streaks appeared hyperplasia, the phenomenon of lung tissue was replaced by hyperplasia, this symptom has a relatively small impact on the human body, but if the patient appeared to fibrous foci of the area is more extensive, it is necessary to carry out timely treatment, otherwise it may lead to patients to have respiratory difficulties and other situations.