title: T-cell lymphoma developing in Hodgkin's disease: evidence for two clones.
abstract: A case of peripheral T-cell lymphoma (PTL) occurring in a patient with Hodgkin's disease (HD) in relapse is described. The second neoplasm developed 25 months after the diagnosis of HD. Cytogenetic analysis on the lymph node biopsy at the time of diagnosis of PTL revealed the co-existence of two distinct, abnormal cell clones. The first clone was characterized by a reciprocal translocation t(5;7)(q13;q35) involving 7q35, namely the TCR-beta gene, as expected in T-cell lymphomas. The second cell clone carried trisomies for chromosomes 2, 5, 7, and 14. By immunophenotypic and molecular analysis as well as by in situ hybridization, it was possible to prove that the malignant T-cells and the Reed-Sternberg cells corresponded to different cell clones, one carrying the structural chromosome abnormalities and one carrying the numerical chromosome anomalies. These results indicate that the present case represented a true composite lymphoma.
authors.affiliation: Centre for Human Genetics, University of Leuven, Belgium.
authors.forename: I
authors.initials: I
authors.lastname: Wlodarska
authors.forename: J
authors.initials: J
authors.lastname: Delabie
authors.forename: C
authors.initials: C
authors.lastname: De Wolf-Peeters
authors.forename: C
authors.initials: C
authors.lastname: Mecucci
authors.forename: M
authors.initials: M
authors.lastname: Stul
authors.forename: G
authors.initials: G
authors.lastname: Verhoef
authors.forename: J J
authors.initials: JJ
authors.lastname: Cassiman
authors.forename: H
authors.initials: H
authors.lastname: Van den Berghe
mesh_terms: D015703:Antigens, CD / Q000032:analysis; D001706:Biopsy; D002869:Chromosome Aberrations / Q000209:etiology / Q000235:genetics*; D025063:Chromosome Disorders; D015321:Gene Rearrangement / Q000235:genetics; D006689:Hodgkin Disease / Q000235:genetics* / Q000473:pathology; D006801:Humans; D008198:Lymph Nodes / Q000276:immunology / Q000473:pathology; D016399:Lymphoma, T-Cell / Q000209:etiology / Q000235:genetics* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D009378:Neoplasms, Multiple Primary / Q000235:genetics* / Q000473:pathology; D012074:Remission Induction
chemical_list: D015703:Antigens, CD