Occasional dry and wet rales or even twanging and croup sounds in the lungs are symptoms of the clinical diagnosis of chlamydial pneumonia. Pulmonary examinations: Pulmonary examinations are complex examinations with many tests, such as pulmonary function tests, pulmonary capillary wedge pressure, bronchoscopy, etc. Pulmonary function test: Pulmonary function test includes ventilation function, ventilation function, respiratory regulation function and pulmonary circulation function, etc. There are many examination items and measurement indexes. It is especially important for smokers and people who work in highly polluted jobs to determine how well you can tolerate and what kind of work you can do. The test is also very sensitive and does not cause any damage to the body. Pulmonary capillary wedge pressure: Pulmonary capillary wedge pressure is one of the most common and important indicators used in clinical hemodynamic monitoring. It is also known as pulmonary artery wedge pressure (PAWP). Pulmonary artery wedge pressure is usually measured by floating a Swan-Ganz balloon catheter through the bloodstream and wedging it into the small pulmonary artery, blocking the antegrade blood flow there, at which point the pressure measured at the tip of the catheter is the pulmonary artery wedge pressure (PAWP). Bronchoscopy: Bronchoscopy is an examination method that includes electronic bronchoscopy, pediatric bronchoscopy, and transbronchoscopic lung biopsy. Selective bronchoscopy is performed with the patient in a supine or semi-recumbent position, with static access, intermittent blood pressure monitoring, and continuous oximetry and ECG monitoring. Fluoroscopy is not necessary but can be helpful in many cases. Color video imaging bronchoscopy is useful to visualize and allow for the imaging of airway lesions. Chest CT: CT examination of the chest is a method of examining the chest by X-ray computed tomography (CT). Chest wall examination can detect asbestosis with pleural thickening that cannot be shown on chest X-ray. In case of pleural effusion, if small pleural nodules or masses are found, it can help to diagnose metastases and mesothelioma, and according to the CT value of pleural masses, it can identify encapsulated effusion, limited mesothelioma and extra pleural lipoma. With the help of CT enhancement, it can diagnose chest wall hemangioma, and it can well show rib fracture and rib destruction.