Diffuse large B-cell lymphoma (DLBCL) is an aggressive disease with considerable heterogeneity reflected in the 2008 World Health Organization classification. In recent years, genome-wide assessment of genetic and epigenetic alterations has shed light upon distinct molecular subsets
linked to dysregulation of specific genes or pathways. Besides fostering our knowledge regarding the molecular complexity of DLBCL types, these studies have unraveled previously unappreciated genetic lesions, which may be exploited for prognostic and therapeutic purposes. Following the last
World Health Organization classification, we have witnessed the emergence of new variants of specific DLBCL entities, such as CD30+ DLBCL, human immunodeficiency virus–related and age-related variants of plasmablastic lymphoma, and EBV+ DLBCL arising in young patients.
In this review, we will present an update on the clinical, pathologic, and molecular features of DLBCL incorporating recently gained information with respect to their pathobiology and prognosis. We will emphasize the distinctive features of newly described or emerging variants and highlight
advances in our understanding of entities presenting a diagnostic challenge, such as T-cell/histiocyte-rich large B-cell lmphoma and unclassifiable large B-cell lymphomas. Furthermore, we will discuss recent advances in the genomic characterization of DLBCL, as they may relate to prognostication
and tailored therapeutic intervention. The information presented in this review derives from English language publications appearing in PubMed throughout December 2015. For a complete outline of this paper, please visit: http://links.lww.com/PAP/A12.
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aggressive large B-cell lymphomas;
Document Type: Research Article
First Department of Pathology
Department of Hematology, Athens University, School of Medicine, Laikon General Hospital, Athens
Department of Pathology, Faculty of Medicine, University of Thessaly, Larissa, Greece
July 1, 2016