Professor Marcin Zielinski, MD, PhD is a thoracic surgeon of Department of Thoracic Surgery, Pulmonary Hospital, Zakopane, Poland. He graduated from the Medical Academy in Warsaw in 1983 and subsequently specialized in general and thoracic surgery. He gained his doctorate in 1994 from the Medical Academy in Warsaw and in 2006 was awarded his habilitation by the Jagiellonian University, Cracow, for studies on factors affecting the effectiveness of the operative treatment of myasthenia gravis. He received a title of professor in 2020. Since 1996 till 2024 he has been Head of the Department of Thoracic Surgery and since 2004 untill now, also Director of the Pulmonary Hospital in Zakopane. Prof. Zielinski is an Associate – Editor- in- Chief of the Mediastinum Journal, a member of the editorial board of the Journal of Visualized Surgery (JOVS) and a reviewer of thoracic surgery manuscripts for several leading journals. He is the author of many original articles in indexed journals. His main clinical interests are Esophageal Surgery, Surgery of the Mediastinum, Myasthenia gravis, other minimally invasive operations and Broncho-angio-plastic procedures.