RESULTS
Over the 15 year study period, there were 1,456 patients diagnosed with hematologic malignancies at TCH: 981 with ALL, 173 with AML, and 302 with lymphoma. The HIM search provided a list of 365 potential patients that met our ICD9 code inclusion criteria for both hematologic malignancy and IMI. After medical record review, 61 patients (4.2%) met criteria for pre-HSCT proven or probable IMI as defined by the EORTC/MSG, including 8 cases of probable IMI and 53 cases of proven IMI. The incidence of IMI varied by cancer diagnosis, with highest incidence in AML (11/173, 6.4%), then ALL (45/981, 4.6%), and lowest incidence in children with lymphoma (5/302, 1.7%). The distribution of patient characteristics who were diagnosed with leukemia or lymphoma between 2006 and 2019 is shown in Table 1 , compared with the subset who were also diagnosed with IMI, showing a higher likelihood of AML and lower likelihood of lymphoma in the IMI subgroup.