(Disclaimer: This article is only for the purpose of popularization of science, in order to protect the patient’s privacy, the relevant information in the following content has been processed) Abstract: This case is a 45-year-old woman, found in the physical examination of the right middle lobe of the lungs at the time of the atelectasis of 2 months, but the patient did not have any discomfort symptoms, improve the bronchoscopy, blood routine and other related examinations; and given to the lungs lavage, retained the lavage fluid to detect the pathogenicity of the test and mucosal biopsies, and ultimately confirmed to be chronic pneumonia, but as the patient does not have any discomfort symptoms, so there is no need for drug treatment. Pneumonia was finally recognized as chronic pneumonia, but since the patient did not have any uncomfortable symptoms, there was no need for medication, and regular outpatient follow-up was sufficient. Basic information】Female, 45 years old 【Disease type】Chronic pneumonia 【Hospital】 The Second Affiliated Hospital of Harbin Medical University 【Time of consultation】April 2022 【Treatment plan】Perfect bronchoscopy, blood routine and other related examinations; give lung lavage, retain the lavage fluid to detect the pathogenicity of the disease and take mucosal biopsy; no need for medication, regular outpatient follow-up 【Treatment cycle】Regular follow-up 【Treatment effect】The patient has been identified as having the disease. Effectiveness] Disease has been identified, the patient has no symptoms I. Initial Consultation The patient is a 45-year-old woman, who was found to have lung shadows during physical examination, and the chest X-ray of the lung showed shadows in the right hilar region, and the CT of the lung showed atelectasis in the middle lobe of the right lung. The patient had no cough, sputum, fever, chest tightness, chest pain and emaciation. Careful inquiry of medical history showed that the patient had pneumonia when he was small, but his symptoms slowly improved after taking oral anti-inflammatory drugs, after which he did not review the chest radiographs and did not receive systematic treatment in the hospital. Physical examination revealed: body temperature: 36.5℃, pulse: 88 times/min, respiration: 18 times/min, blood pressure: 120/70mmHg, heart rate: 88 times/min. He was clear and lucid, with no cyanosis of the lips and skin, no enlarged lymph nodes were palpable in the neck, no dry or wet rales in both lungs; his heart was in rhythm; his abdomen was not distended, and his liver and spleen were not palpable and enlarged. Based on the patient’s lack of symptoms and imaging features, chronic pneumonia was considered to be a high possibility. Treatment The patient had been found to have pulmonary atelectasis for 2 months. Since the patient did not have any symptoms or evidence of infection, antibiotic treatment was not given for the time being, and since the patient had not been examined by CT of the lungs in the past, it could not be determined whether the current lesion had progressed compared with the original one, so in order to exclude specific chronic infections in the lungs, and also in order to exclude lung tumors. The patient was advised to complete bronchoscopy, blood tests, and electrocardiogram. Bronchoscopy showed that the patient’s airway mucosa was slightly congested, the openings of each lobe segment of the left lung were patent, no abnormality was seen in the upper and lower lobes of the right lung, and the opening of the middle lobe of the right lung was narrowed with white secretion adhering to it. After irrigation was given, the irrigation fluid was retained to be sent for pathogenetic examination and mucosal biopsy. Mucosal biopsy returned chronic inflammation of the airways, as no evidence of tumor was found. It was recommended that the patient be discharged from the hospital, and regular reexamination of lung CT was sufficient. Third, treatment effect After the patient’s visit to the hospital, there was no fever and cough, so no treatment was given, but focused on infection as well as tumor exclusion, firstly, pre-bronchoscopy preparation was carried out, the patient was informed of the purpose and significance of bronchoscopy, and the patient was allowed to try to cooperate with the examination and diagnosis, and the alveolar lavage was taken and sent to be examined, and the result was that no pathogenic bacteria of any significance was detected. Therefore, the patient’s current status is good, without any discomfort symptoms, the patient was instructed to regular medical review can be, for the condition does not need to worry too much. Fortunately, although the patient suffered from chronic pneumonia, she did not have any discomfort. However, it is still necessary to advise the patient not to use antibiotics indiscriminately to prevent the emergence of drug-resistant bacteria and other parts of the bacterial flora imbalance, if coughing, coughing up sputum and other uncomfortable symptoms, should consult a doctor in a timely manner, under the guidance of the doctor’s treatment. If in the course of observation, the inflammation of the middle lobe of the right lung increases, it is necessary to exclude the possibility of secondary bacterial infection, secondary tuberculosis or the occurrence of tumors, so if necessary, re-do the bronchoscopy to diagnose the cause of exacerbation. In life, appropriate physical exercise, enhance physical fitness, enhance the body’s ability to resist disease. In the winter and spring seasons, you should do a good job of preventing cold and keeping warm, avoiding colds, which can aggravate chronic inflammation or even secondary infections. Diet, recommended high-quality protein diet, such as eggs, milk, red meat, etc., appropriate increase in nutrition, help to improve physical fitness. V. Personal perception The causes of chronic pneumonia are very many, the most common in patients with tuberculosis lung infection, resulting in prolonged course of the disease; can also be seen in viral infections caused by interstitial pneumonia, resulting in chronic pneumonia; cardiovascular diseases, such as congenital heart disease or cardiac insufficiency, cardiac shadow compression of lung tissue, can also lead to chronic inflammation in the lungs; and immunodeficiency of the patient is also prone to the formation of chronic pneumonia. Chronic pneumonia in the stable period is consistent with the patients in this article, almost no cough, cough sputum, no fever, no obvious signs of disease, but in the low immunity easily lead to aggravation of the infection, cough, cough sputum and other manifestations, but also easily secondary to a variety of pathogens infections, when the infection is recurrent, the need to actively seek medical attention, early detection, early treatment.