Abstract:
:Although considered the same disease by 2016 WHO Classification, B-ALL and B-LBL show different clinicobiologic behavior, with B-ALL manifesting as disseminated disease and B-LBL as a localized mass. Distinction between the two is based on an arbitrary cutoff of 25% bone marrow involvement. We reviewed clinical, immunophenotypic, and cytogenetic data in B-lymphoblastic neoplasms of childhood to explain the differences. Performing a retrospective review of 126 cases of B-ALL and 18 cases of B-LBL in patients ≤18 years, revealed the following significant differences: younger age of presentation for leukemia; increased cytogenetic abnormalities in leukemia than lymphoma, specifically increased recurrent genetic abnormalities, with the exception of ploidy aberrancy; and the observation that unfavorable recurrent genetic abnormalities occurred in B-ALL and only favorable abnormalities in B-LBL. Down syndrome presented with leukemia only. Findings demonstrated that pediatric B-ALL and B-LBL exhibit dissimilar genomic profiles, suggesting possible differences in pathogenesis between the two closely-related neoplasms.
journal_name
Leuk Lymphomajournal_title
Leukemia & lymphomaauthors
Knez V,Bao L,Carstens B,Liang Xdoi
10.1080/10428194.2020.1761970subject
Has Abstractpub_date
2020-09-01 00:00:00pages
2129-2135issue
9eissn
1042-8194issn
1029-2403journal_volume
61pub_type
杂志文章abstract::Bone marrow transplantation procedure has emerged as an effective treatment for hematological malignancies. However, recurrence of leukemia is still the major cause of treatment failure. Subsequent treatment in this category of patients, generally considered incurable, has not been yet standardized. At our institution...
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