Having graduated from the top medical university in Poland, I began to build my experience in the field of pediatric haemato-oncology, especially dealing with bone tumors. I have participated in many international training programs, grants, commercial and non-commercial clinical trials (as PI, co-Investigator and national coordinator in international non-commercial trials). I also sit on boards of many Polish and international organizations, including the Executive Committee of the Euro Ewing Consortium and. I also serve as the National Coordinator for the Treatment of Bone Tumors in Children and Adolescents in Poland. Additionally, I am involved in many charity programs and initiatives supporting children suffering from cancer. Each of these experiences has proven invaluable in building my knowledge and expertise in my chosen field. My mission has always been to promote children's oncology and awareness of the risk this type of disease poses for children and adolescents. In my work, I focus on improving the treatment results of primary bone tumors. Under my leadership, the Oncology Department of my institution became a member of EORTC in 2019 and is, at present, the only Polish oncological children’s center to have succeeded to do so. International cooperation between centers for pediatric cancer treatment is vital for meaningful improvements in the field.