title: Terminal lymphoblastic transformation in polycythemia vera.
abstract: A patient with polycythemia vera and lymphoblastic transformation is discussed. Phenotypic characterization revealed that the predominant leukemic cells were classic "null" lymphoid cells with a minority component of pre-B cells. This case provides evidence that the stem cell disorder in polycythemia vera may involve the lymphocyte early in development.
authors.forename: T A
authors.initials: TA
authors.lastname: Braich
authors.forename: T M
authors.initials: TM
authors.lastname: Grogan
authors.forename: M J
authors.initials: MJ
authors.lastname: Hicks
authors.forename: B R
authors.initials: BR
authors.lastname: Greenberg
mesh_terms: D000368:Aged; D006801:Humans; D007945:Leukemia, Lymphoid / Q000473:pathology*; D008215:Lymphocytes, Null / Q000473:pathology; D008297:Male; D011087:Polycythemia Vera / Q000473:pathology*