Dr. Olshefski is a member of the Section of Hematology/Oncology/ Blood and Marrow Transplant (BMT) at Nationwide Children’s Hospital and a Professor of Pediatrics at The Ohio State University College of Medicine. His clinical interest is the treatment of children and adolescents with primary benign and malignant brain tumors. His clinical research activities focus on clinical trials for treatment of brain tumors in children. Dr. Olshefski also has an interest in the treatment of patients with Langerhans cell histiocytosis (LCH). He is the institutional investigator for several international clinical trials in the treatment of LCH.