title: The spectrum of acute lymphoblastic leukemia with mature B-cell phenotype.
abstract: We showed heterogeneous disease spectrum among 15 acute lymphoblastic leukemia (ALL) cases with mature B-cell phenotype diagnosed over the past 7 years at our institution. Besides those with typical L3 morphology and 8q24 (c-myc) translocation (n=6), there were cases showing L1 or L2 morphology without 8q24 translocation (n=6), unusually large L3 blasts in hyperdiploid clone (n=2) and blastoid variant of mantle cell lymphoma (n=1). The expression of CD5 and cyclin D1 may need to be routinely determined on ALL cases with mature B-cell phenotype and non-L3 morphology to facilitate timely diagnosis of blastoid MCL and institution of suitable management.
authors.affiliation: Department of Anatomical and Cellular Pathology, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong.
authors.forename: Natalie P H
authors.initials: NP
authors.lastname: Chan
authors.forename: Edmond S K
authors.initials: ES
authors.lastname: Ma
authors.forename: Thomas S K
authors.initials: TS
authors.lastname: Wan
authors.forename: Li Chong
authors.initials: LC
authors.lastname: Chan
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001856:Bone Marrow Examination; D002051:Burkitt Lymphoma / Q000145:classification / Q000235:genetics / Q000473:pathology*; D018956:CD5 Antigens / Q000032:analysis; D002648:Child; D002675:Child, Preschool; D002883:Chromosomes, Human, Pair 14; D002898:Chromosomes, Human, Pair 8; D019938:Cyclin D1 / Q000032:analysis; D020732:Cytogenetic Analysis; D005260:Female; D006801:Humans; D016130:Immunophenotyping; D020522:Lymphoma, Mantle-Cell / Q000175:diagnosis / Q000473:pathology; D008297:Male; D008875:Middle Aged; D010641:Phenotype; D054198:Precursor Cell Lymphoblastic Leukemia-Lymphoma / Q000145:classification* / Q000235:genetics / Q000473:pathology; D012189:Retrospective Studies; D014178:Translocation, Genetic
chemical_list: D018956:CD5 Antigens; D019938:Cyclin D1