J. Allyson Hays, MD, discusses the rare disease histiocytosis, how it presents in pediatric cases, how Children's Mercy treats it and more.
Selected Podcast
Histiocytosis Overview and Research

Allyson Hays, MD
Dr. J. Allyson Hays is a Pediatric Hematologist/Oncologist and Director of the Histiocytosis Program at Children’s Mercy. She is an Associate Professor of Pediatrics at the University of Missouri-Kansas City School of Medicine. Dr. Hays focuses on histiocytic disorders including Langerhans cell histiocytosis (LCH), hemophagocytic lymphohistiocytosis (HLH) as well as other pediatric oncologic processes including leukemia, lymphoma and bone tumors. In addition to clinical care, Dr. Hays is actively engaged in quality improvement efforts on infectious complications with central lines in children with cancer or blood disorders, program development, research, education and leading the Visiting Professor program in the Division of Hematology/Oncology/Bone Marrow Transplant.