Volume 46, Issue 2 pp. 217-228

Composite marginal zone B-cell lymphoma and classical Hodgkin's lymphoma: a clinicopathological study of 12 cases

A Zettl

A Zettl

Institute of Pathology, University of Würzburg, Würzburg, Germany

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T Rüdiger

T Rüdiger

Institute of Pathology, University of Würzburg, Würzburg, Germany

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A Marx

A Marx

Institute of Pathology, University of Würzburg, Würzburg, Germany

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H K Müller-Hermelink

H K Müller-Hermelink

Institute of Pathology, University of Würzburg, Würzburg, Germany

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G Ott

G Ott

Institute of Pathology, University of Würzburg, Würzburg, Germany

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First published: 05 February 2005
Citations: 44
Andreas Zettl MD, Institute of Pathology, University of Würzburg, Josef-Schneider-Strasse 2, 97080 Würzburg, Germany. e-mail: [email protected]

Abstract

Aims : Classical Hodgkin's lymphoma (cHL) rarely coexists as composite lymphoma with B-cell non-Hodgkin's lymphoma (B-NHL). We characterized 12 cases of composite marginal zone B-cell lymphoma (MZBL) and cHL by immunohistochemistry and molecular biology.

Methods and results : Eight patients had gastric MZBL of mucosa-associated lymphoid tissue (MALT)-type, in five cases with a diffuse large B-cell lymphoma component. Concurrent cHL was observed either in the stomach wall, regional, or distant lymph nodes. One patient each had composite pulmonary/thyroid MZBL of MALT-type and cHL. In two cases, nodal composite MZBL and cHL was observed. cHL displayed features of mixed cellularity type in 10 cases, while in two cases only scattered Hodgkin- and Reed–Sternberg (H/RS) cells were noted. H/RS cells expressed CD30, multiple myeloma oncogene 1 protein (MUM1P), p53 (100%), CD15 (58%), CD20 (58%) and Epstein–Barr virus-associated LMP1 (50%). No t(11;18)(q21;q21) was detected in composite MZBL of MALT-type and cHL.

Conclusions : MZBL and cHL may occur as composite lymphoma, possibly reflecting clonal lymphoma progression. Derivation from extranodal MZBL of MALT-type should be excluded in cases in which a diagnosis of primary extranodal cHL is considered.

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