title: Morphologic and phenotypic changes of the leukemic cells in a case of marginal zone B-cell lymphoma.
abstract: A particular case of marginal zone B-cell lymphoma (MZBCL) presenting with leukemic lymphocytes is reported. In the present observation, the leukemic cells not only displayed a remarkable morphological fluctuation but also had an unusual phenotype, changing with time. These phenotypic features, which have been functionaly investigated by in vitro assays, might simply reflect an activation state depending on the microenvironment. Because of its disconcerting similarities with hairy cell leukemia (HCL) and splenic lymphoma with villous lymphocytes (SLVL), this case relaunches the debate about whether close relationships might exist between the splenic marginal zone, SLVL and HCL.
authors.affiliation: Department of Pathology, Institut Jules Bordet, Brussels, Belgium.
authors.forename: J L
authors.initials: JL
authors.lastname: Dargent
authors.forename: J P
authors.initials: JP
authors.lastname: Delville
authors.forename: A
authors.initials: A
authors.lastname: Kornreich
authors.forename: O
authors.initials: O
authors.lastname: Pradier
authors.forename: P
authors.initials: P
authors.lastname: Cochaux
authors.forename: T
authors.initials: T
authors.lastname: Velu
authors.forename: P
authors.initials: P
authors.lastname: Capel
authors.forename: W
authors.initials: W
authors.lastname: Feremans
authors.forename: P
authors.initials: P
authors.lastname: Neve
mesh_terms: D018941:Antigens, CD19 / Q000032:analysis; D001402:B-Lymphocytes / Q000276:immunology; D018740:Genetic Heterogeneity; D006801:Humans; D007938:Leukemia / Q000235:genetics* / Q000473:pathology*; D007943:Leukemia, Hairy Cell / Q000473:pathology; D008214:Lymphocytes / Q000473:pathology; D016393:Lymphoma, B-Cell / Q000235:genetics* / Q000473:pathology*; D008297:Male; D008875:Middle Aged; D010641:Phenotype
chemical_list: D018941:Antigens, CD19