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Published in: Journal of Hematopathology 3/2012

01-09-2012 | Original Article

Early lesions in lymphoid neoplasia

Conclusions based on the Workshop of the XV. Meeting of the European Association of Hematopathology and the Society of Hematopathology in Uppsala, Sweden

Authors: Falko Fend, José Cabecadas, Philippe Gaulard, Elaine S. Jaffe, Philip Kluin, Isinsu Kuzu, LoAnn Peterson, Andrew Wotherspoon, Christer Sundström

Published in: Journal of Hematopathology | Issue 3/2012

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Abstract

The increasing use of immunophenotypic and molecular techniques on lymphoid tissue samples without obvious involvement of malignant lymphoma has resulted in the increased detection of ‘early’ lymphoid proliferations which show some, but not all, of the criteria necessary for a diagnosis of malignant lymphoma. In most instances, these are incidental findings in asymptomatic individuals, and their biological behaviour is uncertain. In order to better characterize these premalignant conditions and to establish diagnostic criteria, a joint workshop of the European Association for Haematopathology and the Society of Hematopathology was held in Uppsala, Sweden, in September 2010. The panel reviewed and discussed more than 130 submitted cases and reached consensus diagnoses. Cases representing the nodal equivalent of monoclonal B cell lymphocytosis were discussed, as well as the ‘in situ’ counterparts of follicular lymphoma (FL) and mantle cell lymphoma, topics that also stimulated discussions concerning the best terminology for these lesions. The workshop also addressed the borderland between reactive hyperplasia and clonal proliferations such as paediatric marginal zone lymphoma and paediatric FL, which may have very limited capacity for progression. Virus-driven lymphoproliferations in the grey zone between reactive lesions and manifest malignant lymphoma were covered. Finally, early manifestations of T cell lymphoma, both nodal and extranodal, and their mimics were addressed. This workshop report summarizes the most important conclusions concerning the diagnostic features, as well as proposals for terminology and classification, of early lymphoproliferations and tries to give some practical guidelines for diagnosis and reporting.
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Metadata
Title
Early lesions in lymphoid neoplasia
Conclusions based on the Workshop of the XV. Meeting of the European Association of Hematopathology and the Society of Hematopathology in Uppsala, Sweden
Authors
Falko Fend
José Cabecadas
Philippe Gaulard
Elaine S. Jaffe
Philip Kluin
Isinsu Kuzu
LoAnn Peterson
Andrew Wotherspoon
Christer Sundström
Publication date
01-09-2012
Publisher
Springer-Verlag
Published in
Journal of Hematopathology / Issue 3/2012
Print ISSN: 1868-9256
Electronic ISSN: 1865-5785
DOI
https://doi.org/10.1007/s12308-012-0148-6

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