title: Chromosome studies of hematopoietic colonies for distinct diagnosis of megakaryoblastic crisis of chronic myelogenous leukemia: a case report.
abstract: Chromosome studies of cells from megakaryocytic colonies (CFU-Meg) as evidenced by a megakaryocyte-specific monoclonal antibody, TP80, from a patient with chronic myelogenous leukemia (CML) in the blast crisis (BC) revealed the same aberrant karyotype, 52,XY,+9,+9,+18,+19,+21,+22,t(9;22)(q34;q11),t(9;22), as that having newly appeared in the peripheral blood. Cells from erythroid bursts (BFU-E) showed only the standard 46,XY,t(9;22) karyotype, and cells from granulocyte/macrophage colonies (CFU-GM) had either of these karyotypes. These results demonstrated that the whole megakaryocytic line and part of the granulocyte/macrophage line had been involved in the BC while the erythroid line totally belonged to the original clone. Chromosome analysis coupled with immunophenotyping of hemopoietic colonies was useful for a definite diagnosis of megakaryoblastic crisis of CML in this patient.
authors.forename: Y
authors.initials: Y
authors.lastname: Shiga
authors.forename: H
authors.initials: H
authors.lastname: Kimura
authors.forename: R
authors.initials: R
authors.lastname: Abe
authors.forename: T
authors.initials: T
authors.lastname: Sato
authors.forename: S
authors.initials: S
authors.lastname: Matsuda
authors.forename: T
authors.initials: T
authors.lastname: Uchida
authors.forename: S
authors.initials: S
authors.lastname: Kariyone
authors.forename: N
authors.initials: N
authors.lastname: Maseki
authors.forename: M
authors.initials: M
authors.lastname: Sakurai
mesh_terms: D000328:Adult; D002875:Chromosomes; D005455:Fluorescent Antibody Technique; D006412:Hematopoietic Stem Cells / Q000473:pathology / Q000502:physiology*; D006801:Humans; D007621:Karyotyping; D007951:Leukemia, Myeloid / Q000175:diagnosis* / Q000235:genetics / Q000473:pathology; D008297:Male; D010641:Phenotype