Methods
The study was approved by the institutional review and ethics boards at the University of Utah. We queried the electronic database from the Associated Regional and University Pathologists (ARUP) Laboratories for all cases of “bone marrow necrosis”, “acute lymphoblastic leukemia”, “acute myeloid leukemia” and “neuroblastoma” in patients that were 18 years and younger from January 1st, 2010 to February 1st, 2020. ARUP Laboratory is an enterprise of the University of Utah and its Department of Pathology. It serves as a not-for-profit national reference laboratory.
The clinical, laboratory and radiological information of the patients were obtained from electronic medical records.