title: Waldenström macroglobulinemia with karyotypic aberrations involving both homologous 6q.
abstract: An 84-year-old female presenting with proptosis and hyperviscosity syndrome was found to have Waldenström macroglobulinemia. Karyotypic analysis showed structural chromosomal abnormalities involving both homologous chromosomes 6 with a deleted 6q at q21-q23 and a complex three-break rearrangement in the t(6;13;21)?(q21;q14;q11). A literature review suggests that deletions of chromosome 6 at 6q21 are associated with lymphoplasmacytoid differentiation and IgM production in B-cell chronic lymphoproliferative disorders.
authors.affiliation: Department of Pathology, Queen Elizabeth Hospital, Hong Kong SAR, China. kfwong@ha.org.hk
authors.forename: K F
authors.initials: KF
authors.lastname: Wong
authors.forename: C C
authors.initials: CC
authors.lastname: So
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D002869:Chromosome Aberrations; D002896:Chromosomes, Human, Pair 6; D005260:Female; D006801:Humans; D008258:Waldenstrom Macroglobulinemia / Q000097:blood / Q000175:diagnosis / Q000235:genetics*