Dr. Mazzella is Deputy Director of the Division of Thoracic Surgery at the European Institute of Oncology in Milan. From 2016 to 2019, he worked in Paris at the Assistance Publique Hopitaux de Paris (Hopital Cochin and Hopital Europeen George Pompidou) where he became an expert in the treatment of lung cancer and in lung transplantation. During this time, he taught medical students and thoracic surgery residents at Paris Descartes University. He moved to Milan to the European Insitute of Oncology in 2019, where he became an expert in the surgical treatment of lung cancer and in minimally invasive techniques such as robotic surgery. He is the first author and co-author of more than 50 papers in peer-reviewed publications, journals and scientific book chapters. He has presented his studies at many national and international scientific and surgical conferences. He is the editor and reviewer of different international journals. He obtained his PhD at the Università degli studi della Campania Luigi Vanvitelli in 2021.