Prospective Cohort of Diagnostic Bronchoscopy for Peripheral Lung Lesions

* Patients with peripheral pulmonary lesions who need histological diagnosis due to suspected lung cancer and whose lesions are judged capable of histological examination through guided bronchoscopy will be prospectively recruited. * This study is a pure non-interventional pragmatic design. In addition to biopsy for lung lesions using bronchoscopy, lung cancer staging and tests necessary for metastases and treatment for diagnosed lung cancer are performed according to existing guidelines and the judgment of medical staff. * We will analyze the clinical characteristics of guided bronchoscopy procedures used in clinical practice and the main results during the follow-up period of up to one year (diagnostic yield, sensitivity, safety, practicality, and various factors affecting usefulness).