This is the fourth edition of the Musculoskeletal Oncology Course of the University of Leiden. It has been organized by the Department of Orthopedics of the University of Leiden in close cooperation with the University of Padova and other international faculties.

Based on a years experience of some faculty members with other Oncology Courses, such as the Moffitt Cancer Center Course, the Rizzoli Course and the European Course of Budapest Semmelweis University, our course is aimed to offer a review and update of the knowledge in musculoskeletal oncology. And more specifically to provide basic information on clinical features, imaging, pathology and principles of treatment of the bone and soft tissues tumors and pseudotumoral lesions.

It is a short but comprehensive course, addressed to residents, fellows and young surgeons who are wishing to start their activity or are already involved in the field of musculoskeletal oncology, in order to refresh or widen their knowledge. This course is designed to be fairly interactive, a voting app will be used, with specific time slots dedicated to case discussion and questions. Our faculty includes very prestigeous names in musculoskeletal oncology, with different specialities represented: orthopedic surgery of course, as well as pathology, radiology and medical oncology. We hope that this course will be both useful and pleasant for all participants.