Prof. Dr. Sang-Won Um is a Professor in the Division of Pulmonary and Critical Care Medicine at the Sungkyunkwan University School of Medicine. He is an expert in the management of pulmonary nodules and the diagnosis and staging of lung cancer. He is a member of the International Association for the Study of Lung Cancer, the American Association for Cancer Research, the Asian Pacific Society of Respirology, the Korean Association for Lung Cancer, the Korean Cancer Association, and the Korean Academy of Tuberculosis and Respiratory Diseases. His recent research areas include the molecular pathogenesis of early lung adenocarcinoma and lung cancer organoid research.