Diffuse large B-cell lymphoma arising in a composite lymphoma with biclonality by flow cytometry and one monoclonal band by PCR

Jason Koshy, Tahereh Dadfornia, You Wen Qian

Research output: Contribution to journalArticle

5 Scopus citations

Abstract

Composite lymphoma (CL) refers to the presence of two or more distinct types of lymphomas in a single organ or tissue. CL is an infrequent finding and may be due to the existence of two genetically related neoplasms, i.e. transformation of a single lymphoma into another lymphoma, or be due to the presence of two clonally unrelated lymphomas. CL composed of more than two lymphomas is even rare. Herein we describe a case of diffuse large B-cell lymphoma (DLBCL) arising in a CL of follicular lymphoma (FL) and small lymphocytic lymphoma (SLL) in an inguinal lymph node of an 85 year old woman. The three lymphomas were morphologically and immunophenotypically distinct while flow cytometry detected two monoclonal B-cell populations. Karyotyping and Polymerase Chain Reaction (PCR) for B-cell clonality each detected a single monoclonal B-cell population. The morphology findings may suggest DLBCL being transformed from FL while Richter transformation from SLL appears to be less likely in our case. Due to the single clone by chromosome study and PCR study, the precise relationships of the three lymphomas are unknown.

Original languageEnglish (US)
Pages (from-to)407-410
Number of pages4
JournalInternational Journal of Clinical and Experimental Pathology
Volume7
Issue number1
StatePublished - Jan 13 2014

Keywords

  • Bi-clonality
  • Composite lymphoma
  • Diffuse large B-cell lymphoma
  • PCR

ASJC Scopus subject areas

  • Pathology and Forensic Medicine
  • Histology

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