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Younes S, Subramanian A, Khan A, Zhao S, Binkley M, Natkunam Y. Spatial phenotyping of nodular lymphocyte predominant Hodgkin lymphoma and T-cell/histiocyte-rich large B-cell lymphoma. Blood Cancer J 2024; 14:92. [PMID: 38821935 PMCID: PMC11143196 DOI: 10.1038/s41408-024-01073-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Revised: 05/10/2024] [Accepted: 05/16/2024] [Indexed: 06/02/2024] Open
Abstract
Nodular lymphocyte-predominant Hodgkin lymphoma (NLPHL) is a rare lymphoma with sparse tumor B-cells and a favorable prognosis. Variant growth patterns of NLPHL, however, often show advanced stage, progression to T-cell/histiocyte-rich large B-cell lymphoma (THRLBCL) and a worse prognosis. We studied the tumor microenvironment (TME) of NLPHL and THRLBCL using highplex imaging and spatial profiling at the single cell level. Our findings show distinct differences in TME composition and spatial configuration that differ among typical and variant NLPHL and THRLBCL. Typical NLPHL show abundant helper T-cell subsets, while THRLBCL show abundant cytotoxic T-cells and macrophages. Tumor B-cell size and content is lowest in typical NLPHL, followed by variant NLPHL, and highest in THRLBCL, whereas an opposite trend characterized TME B-cells. CD4/CD8 double-positive T-cells are seen in all NLPHL but not in the majority of THRLBCL and are spatially distant from LP-cells and TFH-rosettes. The differences in macrophage/monocyte content in distinguishing NLPHL pattern E from THRLBCL is further corroborated in independent cohorts of cases. Our results validate the current approach to classification and in addition provide novel insights that could be leveraged to refine clinical management for patients with this spectrum of lymphomas.
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Affiliation(s)
- Sheren Younes
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
| | - Ajay Subramanian
- Radiation Oncology, Stanford University School of Medicine, Stanford, CA, USA
| | - Anum Khan
- Cell Sciences Imaging Facility, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Shuchun Zhao
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
| | - Michael Binkley
- Radiation Oncology, Stanford University School of Medicine, Stanford, CA, USA
| | - Yasodha Natkunam
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA.
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2
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Rahim Y, Maroules M, Teehan E, Bassil G, Boosahda V. Triple Lymphoma and Transformation to Diffuse Large B-Cell Lymphoma Finding at the Time of Diagnosis. Cureus 2023; 15:e43971. [PMID: 37746409 PMCID: PMC10515675 DOI: 10.7759/cureus.43971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/22/2023] [Indexed: 09/26/2023] Open
Abstract
In this report, we present the case of a patient with an uncommon triple diagnosis of (1) follicular (nodular) lymphoma, (2) nodular lymphocyte predominant Hodgkin lymphoma, and (3) diffuse large B-cell lymphoma non-germinal center B-cell (non-GCB) subtype. Although transformation of follicular lymphoma and nodular lymphocyte predominant lymphoma to more aggressive forms such as diffuse large B-cell lymphoma is possible; it generally happens many years after diagnosis. Moreover, there have been reported cases of follicular lymphoma with transformation and nodular lymphocyte predominant Hodgkin lymphoma with transformation at the time of diagnosis, but it is very uncommon to see all three present on initial diagnosis. Our patient presented with a large right axillary mass, which, upon excisional biopsy and subsequent histology, showed the aforementioned lymphomas. The patient did not present with a prodrome of any symptoms except intermittent night sweats. The unique aspect of our case is that transformation and all three lymphomas were seen at the time of diagnosis. The R-CHOP (rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone) chemotherapy regimen is still the standard method of treatment as it has been shown to be effective in treating follicular lymphoma and nodular lymphocyte predominant Hodgkin lymphoma with and without transformation. However, there is insufficient literature on its efficacy when all three are present concurrently.
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Affiliation(s)
- Yaser Rahim
- General Surgery, Aureus University School of Medicine, Passaic, USA
| | | | - Edwin Teehan
- General and Vascular Surgery, St. Mary's General Hospital, Passaic, USA
| | | | - Vanessa Boosahda
- General Surgery, Aureus University School of Medicine, Passaic, USA
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Tutino F, Giovannini E, Chiola S, Giovacchini G, Ciarmiello A. Assessment of Response to Immunotherapy in Patients with Hodgkin Lymphoma: Towards Quantifying Changes in Tumor Burden Using FDG-PET/CT. J Clin Med 2023; 12:jcm12103498. [PMID: 37240602 DOI: 10.3390/jcm12103498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 04/25/2023] [Accepted: 05/10/2023] [Indexed: 05/28/2023] Open
Abstract
Immune checkpoint inhibitors are currently the standard of care for many advanced solid tumors, and they have been recently approved for the treatment of relapsed/refractory Hodgkin lymphoma and primary mediastinal B cell lymphoma. Assessments of the response to immunotherapy may be complicated by the occurrence of the flare/pseudoprogression phenomenon, consisting of initial tumor enlargement and even the appearance of new lesions, followed by a response, which may initially be indistinguishable from true progression. There have been efforts to characterize and capture the new patterns of response observed during immunotherapy, namely, pseudoprogression and delayed response, and several immune-related response criteria have been proposed. Confirming progression on a subsequent scan and measuring the total tumor burden are both common in immune-related criteria. Due to the peculiarity of hematologic malignancies, lymphoma-specific immune-related criteria have been developed (LYRIC), and they have been evaluated in research studies in comparison to the Lugano Classification. In this review work, we illustrate the evolution of the response criteria in lymphomas from the first CT-based criteria to the development of the PET-based Lugano Classification, further refined to take into account the flare phenomenon encountered during immunotherapy. We also describe the additional contribution of PET-derived volumetric parameters to the interpretation of responses during immunotherapy.
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Affiliation(s)
- Francesca Tutino
- Nuclear Medicine Unit, Ospedale Civile Sant'Andrea, Via Vittorio Veneto 170, 19124 La Spezia, Italy
| | - Elisabetta Giovannini
- Nuclear Medicine Unit, Ospedale Civile Sant'Andrea, Via Vittorio Veneto 170, 19124 La Spezia, Italy
| | - Silvia Chiola
- Nuclear Medicine Unit, IRCCS Ospedale Policlinico San Martino, 16132 Genoa, Italy
| | - Giampiero Giovacchini
- Nuclear Medicine Unit, Ospedale Civile Sant'Andrea, Via Vittorio Veneto 170, 19124 La Spezia, Italy
| | - Andrea Ciarmiello
- Nuclear Medicine Unit, Ospedale Civile Sant'Andrea, Via Vittorio Veneto 170, 19124 La Spezia, Italy
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Kosari F, Bakhshi T, Ameli F, Mokhtari M. The utility of IMP3 immunohistochemical staining in differentiating nodular lymphocyte predominant Hodgkin Lymphoma from T-Cell/Histiocyte-Rich large B-Cell lymphoma. BMC Cancer 2022; 22:1359. [PMID: 36577979 PMCID: PMC9795661 DOI: 10.1186/s12885-022-10321-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Accepted: 11/15/2022] [Indexed: 12/30/2022] Open
Abstract
INTRODUCTION Nodular lymphocyte predominant Hodgkin lymphoma (NLPHL) and T cell/histiocyte-rich large B-cell lymphoma (THRLBCL) have overlapping histological features that make their diagnosis challenging. Insulin-like growth factor II mRNA-binding protein 3 (IMP3) is a recently proposed diagnostic marker for Hodgkin's lymphoma. The aim of this study was to determine the ability of IMP3 in differentiating NLPHL from THRLBCL. METHODS In this retrospective study, the formalin-fixed paraffin-embedded blocks from 56 patients (28 NLPHL and 28 large B cell lymphoma (LBCL, including 16 THRLBCL and 12 DLBCL, NOS) cases based on immunohistochemistry (IHC) were included. Sample sections were stained for IMP3 using IHC method. Moderate to strong staining in at least 10% of tumor cells was considered positive IMP3 expression. RESULTS The mean age of the patients was 41.25 ± 16.08 years old. The majority of the patients were male. There was a significant age difference between NLPHL (34.61 ± 16.44 years old) and LBCL (47.89 ± 12.85 years) groups (p = 0.001). No significant difference was seen in gender and site between NLPHL and LBCL groups. The expression of IMP3 was mainly strong in LBCL group, while it was heterogeneously distributed among NLPHL samples ranging from weak to strong (p < 0.001). It was determined that strong IMP3 expression at 55.00% can differentiate LBCL from NLPHL with 71.4% sensitivity and 71.4% specificity. CONCLUSION Our findings showed that IMP3 may be a good complement in differentiating NLPHL cases from THRLBCL.
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Affiliation(s)
- Farid Kosari
- grid.411705.60000 0001 0166 0922Fellowship of Hematopathology, Department of Pathology, Shariati Hospital, Tehran University of Medical Science, Tehran, Iran
| | - Trifeh Bakhshi
- grid.411705.60000 0001 0166 0922Department of Pathology, Cancer Institute Imam Khomeini Hospital Complex, Tehran University of Medical Science, Tehran, Iran
| | - Fereshteh Ameli
- grid.411705.60000 0001 0166 0922Department of Pathology, Cancer Institute Imam Khomeini Hospital Complex, Tehran University of Medical Science, Tehran, Iran
| | - Maral Mokhtari
- grid.412571.40000 0000 8819 4698Fellowship of Hematopathology, Shiraz University of Medical Science, Shiraz, Iran
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Yurttaş NÖ, Eşkazan AE. Clinical Application of Biomarkers for Hematologic Malignancies. Biomark Med 2022. [DOI: 10.2174/9789815040463122010010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Over the last decade, significant advancements have been made in the
molecular mechanisms, diagnostic methods, prognostication, and treatment options in
hematologic malignancies. As the treatment landscape continues to expand,
personalized treatment is much more important.
With the development of new technologies, more sensitive evaluation of residual
disease using flow cytometry and next generation sequencing is possible nowadays.
Although some conventional biomarkers preserve their significance, novel potential
biomarkers accurately detect the mutational landscape of different cancers, and also,
serve as prognostic and predictive biomarkers, which can be used in evaluating therapy
responses and relapses. It is likely that we will be able to offer a more targeted and
risk-adapted therapeutic approach to patients with hematologic malignancies guided by
these potential biomarkers. This chapter summarizes the biomarkers used (or proposed
to be used) in the diagnosis and/or monitoring of hematologic neoplasms.;
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Affiliation(s)
- Nurgül Özgür Yurttaş
- Division of Hematology, Department of Internal Medicine, Cerrahpasa Faculty of Medicine,
Istanbul University-Cerrahpasa, Istanbul, Turkey
| | - Ahmet Emre Eşkazan
- Division of Hematology, Department of Internal Medicine, Cerrahpasa Faculty of Medicine,
Istanbul University-Cerrahpasa, Istanbul, Turkey
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Bosch-Schips J, Granai M, Quintanilla-Martinez L, Fend F. The Grey Zones of Classic Hodgkin Lymphoma. Cancers (Basel) 2022; 14:cancers14030742. [PMID: 35159009 PMCID: PMC8833496 DOI: 10.3390/cancers14030742] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 01/25/2022] [Accepted: 01/28/2022] [Indexed: 01/08/2023] Open
Abstract
Simple Summary Classic Hodgkin lymphoma (CHL) is a well-defined lymphoid neoplasm with a minority of characteristic neoplastic cells of B cell origin, namely Hodgkin and Reed–Sternberg cells immersed in a rich reactive inflammatory infiltrate in the background. Although CHL has always been set apart from non-Hodgkin lymphomas, cases with morphological and phenotypic features intermediate between CHL and other lymphomas have been described. Whereas some of these lymphomas only represent morphological mimics, others exhibit mutational and gene expression profiles which overlap with CHL, indicating that these cases, frequently termed grey zone lymphomas, reside on the biological boundary between CHL and large B-cell lymphomas. In the present review, we aim to describe the current knowledge of these rare lymphomas, address diagnostic issues and summarize today’s concepts on the classification of grey zone lymphomas and related tumors. Abstract Classic Hodgkin lymphoma (CHL) is a well-defined neoplasm characterized by the presence of a minority of pathognomonic Hodgkin and Reed–Sternberg (HRS) cells in a reactive inflammatory background. Although genotypically of B cell origin, HRS cells exhibit a downregulated B cell program and therefore are set apart from other B cell lymphomas in the current WHO classification. However, cases with morphological and phenotypic features overlapping with CHL have been recognized, and the category of B cell lymphoma—unclassifiable—with features intermediate between diffuse large B cell lymphoma (DLBCL) and CHL, also termed grey zone lymphoma, was first introduced into the WHO classification in 2008 as provisional entity. These cases, as well as others raising a differential diagnosis of CHL can present diagnostic problems, as well as therapeutic challenges. Whereas some of these lymphomas only represent biologically unrelated morphological mimics, others, especially mediastinal grey zone lymphoma, exhibit genetic and gene expression profiles which overlap with CHL, indicating a true biological relationship. In this review, we address areas of diagnostic difficulties between CHL and other lymphoma subtypes, discuss the biological basis of true grey zone lymphoma based on recent molecular studies and delineate current concepts for the classification of these rare tumors.
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Affiliation(s)
- Jan Bosch-Schips
- Institute of Pathology and Neuropathology, Tübingen University Hospital and Comprehensive Cancer Center Tübingen-Stuttgart, 72076 Tübingen, Germany; (J.B.-S.); (M.G.); (L.Q.-M.)
- Department of Pathology, Hospital Universitari de Bellvitge—Bellvitge Biomedical Research Institute (IDIBELL), L’Hospitalet de Llobregat, 08907 Barcelona, Spain
| | - Massimo Granai
- Institute of Pathology and Neuropathology, Tübingen University Hospital and Comprehensive Cancer Center Tübingen-Stuttgart, 72076 Tübingen, Germany; (J.B.-S.); (M.G.); (L.Q.-M.)
| | - Leticia Quintanilla-Martinez
- Institute of Pathology and Neuropathology, Tübingen University Hospital and Comprehensive Cancer Center Tübingen-Stuttgart, 72076 Tübingen, Germany; (J.B.-S.); (M.G.); (L.Q.-M.)
| | - Falko Fend
- Institute of Pathology and Neuropathology, Tübingen University Hospital and Comprehensive Cancer Center Tübingen-Stuttgart, 72076 Tübingen, Germany; (J.B.-S.); (M.G.); (L.Q.-M.)
- Correspondence: ; Tel.: +49-7071-2982266
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Chen ZW, Wizniak J, Shang C, Lai R. Flow Cytometric Detection of the Double-Positive (CD4+CD8+)/PD-1bright T-Cell Subset Is Useful in Diagnosing Nodular Lymphocyte-Predominant Hodgkin Lymphoma. Arch Pathol Lab Med 2021; 146:718-726. [PMID: 34506624 DOI: 10.5858/arpa.2020-0726-oa] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/13/2021] [Indexed: 11/06/2022]
Abstract
CONTEXT.— Nodular lymphocyte-predominant Hodgkin lymphoma (NLPHL) is characterized by neoplastic lymphocyte-predominant cells frequently rimmed by CD3+/CD57+/programmed death receptor-1 (PD-1)+ T cells. Because of the rarity of lymphocyte-predominant cells in most cases, flow cytometric studies on NLPHL often fail to show evidence of malignancy. OBJECTIVE.— To evaluate the diagnostic utility of PD-1 in detecting NLPHL by flow cytometry, in conjunction with the CD4:CD8 ratio and the percentage of T cells doubly positive for CD4 and CD8. DESIGN.— Flow cytometric data obtained from cases of NLPHL (n = 10), classical Hodgkin lymphoma (n = 20), B-cell non-Hodgkin lymphoma (n = 22), T-cell non-Hodgkin lymphoma (n = 5), benign lymphoid lesions (n = 20), angioimmunoblastic T-cell lymphomas (n = 6) and T-cell/histiocyte-rich large B-cell lymphomas (n = 2) were analyzed and compared. RESULTS.— Compared with the other groups, NLPHL showed significantly higher values in the following parameters: CD4:CD8 ratio, percentage of T cells doubly positive for CD4 and CD8, percentage of PD-1-positive T cells, and median fluorescence intensity of PD-1 expression in the doubly positive for CD4 and CD8 subset. Using a scoring system (0-4) based on arbitrary cutoffs for these 4 parameters, all 10 NLPHL cases scored 3 or higher, as compared with only 3 cases from the other groups, producing an overall sensitivity of 100% and a specificity of 96% (72 of 75). Two of the 3 outliers were non-Hodgkin lymphoma, and both showed definitive immunophenotypic abnormalities leading to the correct diagnosis. The remaining outlier was a case of T-cell/histiocyte-rich large B-cell lymphoma. CONCLUSIONS.— The inclusion of anti-PD-1 in flow cytometry is useful for detecting NLPHL in fresh tissue samples, most of which would have otherwise been labeled as nondiagnostic or reactive lymphoid processes.
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Affiliation(s)
- Zhongchuan Will Chen
- From the Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Canada (Chen, Wizniak, Shang, Lai).,Alberta Precision Laboratories, Edmonton, Alberta, Canada (Chen, Wizniak, Shang).,Co-first authors Chen and Wizniak contributed equally
| | - Juanita Wizniak
- From the Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Canada (Chen, Wizniak, Shang, Lai).,Alberta Precision Laboratories, Edmonton, Alberta, Canada (Chen, Wizniak, Shang).,Co-first authors Chen and Wizniak contributed equally
| | - Chuquan Shang
- From the Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Canada (Chen, Wizniak, Shang, Lai).,Alberta Precision Laboratories, Edmonton, Alberta, Canada (Chen, Wizniak, Shang)
| | - Raymond Lai
- From the Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Canada (Chen, Wizniak, Shang, Lai)
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Onaindia A, Santiago-Quispe N, Iglesias-Martinez E, Romero-Abrio C. Molecular Update and Evolving Classification of Large B-Cell Lymphoma. Cancers (Basel) 2021; 13:cancers13133352. [PMID: 34283060 PMCID: PMC8269067 DOI: 10.3390/cancers13133352] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 06/21/2021] [Accepted: 06/25/2021] [Indexed: 12/12/2022] Open
Abstract
Simple Summary The development of high-throughput technologies in recent years has increased our understanding of the molecular complexity of lymphomas, providing new insights into the pathogenesis of large B-cell neoplasms and identifying different molecular biomarkers with prognostic impact, that lead to the revision of the World Health Organization consensus classification of lymphomas. This review addresses the main histopathological and molecular features of large B-cells lymphomas, providing an overview of the main recent novelties introduced by the last update of the consensus classification. Abstract Diffuse large B-cell lymphomas (DLBCLs) are aggressive B-cell neoplasms with considerable clinical, biologic, and pathologic diversity. The application of high throughput technologies to the study of lymphomas has yielded abundant molecular data leading to the identification of distinct molecular identities and novel pathogenetic pathways. In light of this new information, newly refined diagnostic criteria have been established in the fourth edition of the World Health Organization (WHO) consensus classification of lymphomas, which was revised in 2016. This article reviews the histopathological and molecular features of the various aggressive B-cell lymphoma subtypes included in the updated classification.
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Affiliation(s)
- Arantza Onaindia
- Bioaraba Health Research Institute, Oncohaematology Research Group, 01070 Vitoria-Gasteiz, Spain
- Osakidetza Basque Health Service, Araba University Hospital, Pathology Department, 01070 Vitoria-Gasteiz, Spain; (N.S.-Q.); (E.I.-M.); (C.R.-A.)
- Correspondence: ; Tel.: +34-699-639-645
| | - Nancy Santiago-Quispe
- Osakidetza Basque Health Service, Araba University Hospital, Pathology Department, 01070 Vitoria-Gasteiz, Spain; (N.S.-Q.); (E.I.-M.); (C.R.-A.)
| | - Erika Iglesias-Martinez
- Osakidetza Basque Health Service, Araba University Hospital, Pathology Department, 01070 Vitoria-Gasteiz, Spain; (N.S.-Q.); (E.I.-M.); (C.R.-A.)
| | - Cristina Romero-Abrio
- Osakidetza Basque Health Service, Araba University Hospital, Pathology Department, 01070 Vitoria-Gasteiz, Spain; (N.S.-Q.); (E.I.-M.); (C.R.-A.)
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Pitfalls in the Diagnosis of Nodular Lymphocyte Predominant Hodgkin Lymphoma: Variant Patterns, Borderlines and Mimics. Cancers (Basel) 2021; 13:cancers13123021. [PMID: 34208705 PMCID: PMC8234802 DOI: 10.3390/cancers13123021] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 06/10/2021] [Accepted: 06/12/2021] [Indexed: 02/04/2023] Open
Abstract
Simple Summary Nodular lymphocyte predominant Hodgkin lymphoma (NLPHL) is a rare lymphoma containing infrequent tumor cells (LP cells) in a background of non-neoplastic cells. Some cases of NLPHL can recur or progress to a more aggressive lymphoma, such as diffuse large B-cell lymphoma. Awareness of the different appearances of NLPHL and its overlap with other lymphomas are important for the appropriate diagnosis, classification and research. This article discusses the conceptual framework and guidelines for the diagnosis of NLPHL, and how NLPHL can be best separated from its mimics. Emerging data in the field point to genetic changes in LP cells that are shaped by immune mechanisms. In addition, non-neoplastic cells in the background of LP cells also appear to play an important role. Further investigation is necessary to fully understand the biology of NLPHL and personalize cancer care for patients affected by this lymphoma. Abstract Nodular lymphocyte predominant Hodgkin lymphoma (NLPHL) represents approximately 5% of Hodgkin lymphoma and typically affects children and young adults. Although the overall prognosis is favorable, variant growth patterns in NLPHL correlate with disease recurrence and progression to T-cell/histiocyte-rich large B-cell lymphoma or frank diffuse large B-cell lymphoma (DLBCL). The diagnostic boundary between NLPHL and DLBCL can be difficult to discern, especially in the presence of variant histologies. Both diagnoses are established using morphology and immunophenotype and share similarities, including the infrequent large tumor B-cells and the lymphocyte and histiocyte-rich microenvironment. NLPHL also shows overlap with other lymphomas, particularly, classic Hodgkin lymphoma and T-cell lymphomas. Similarly, there is overlap with non-neoplastic conditions, such as the progressive transformation of germinal centers. Given the significant clinical differences among these entities, it is imperative that NLPHL and its variants are carefully separated from other lymphomas and their mimics. In this article, the characteristic features of NLPHL and its diagnostic boundaries and pitfalls are discussed. The current understanding of genetic features and immune microenvironment will be addressed, such that a framework to better understand biological behavior and customize patient care is provided.
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Bein J, Thurner L, Hansmann M, Hartmann S. Lymphocyte predominant cells of nodular lymphocyte predominant Hodgkin lymphoma interact with rosetting T cells in an immunological synapse. Am J Hematol 2020; 95:1495-1502. [PMID: 32815561 DOI: 10.1002/ajh.25972] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 08/05/2020] [Accepted: 08/17/2020] [Indexed: 12/21/2022]
Abstract
Nodular lymphocyte predominant Hodgkin lymphoma (NLPHL) is a subtype of Hodgkin lymphoma with a preserved B-cell phenotype and follicular T helper (TFH ) cells rosetting around the tumor cells, the lymphocyte-predominant (LP) cells. As we recently described reactivity of the B-cell receptors of LP cells of some NLPHL cases with Moraxella spp. proteins, we hypothesized that LP cells could present peptides to rosetting T cells in a major histocompatibility complex class II (MHCII)-bound manner. Rosetting PD1+ T cells were present in the majority of NLPHL cases, both in typical (17/20) and variant patterns (16/19). In most cases, T-cell rosettes were CD69+ (typical NLPHL, 17/20; NLPHL variant, 14/19). Furthermore, both MHCII alpha and beta chains were expressed in the LP cells in 23/39 NLPHL. Proximity ligation assay and confocal laser imaging demonstrated interaction of the MHCII beta chain expressed by the LP cells and the T-cell receptor alpha chain expressed by rosetting T cells. We thus conclude that rosetting T cells in NLPHL express markers that are encountered after antigenic exposure, that MHCII is expressed by the LP cells, and that LP cells interact with rosetting T cells in an immunological synapse in a subset of cases. As they likely receive growth stimulatory signals in this way, blockade of this interaction, for example, by PD1-directed checkpoint inhibitors, could be a treatment option in a subset of cases in the future.
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Affiliation(s)
- Julia Bein
- Dr. Senckenberg Institute of Pathology Goethe University Frankfurt am Main Germany
| | - Lorenz Thurner
- Department of Internal Medicine I and José Carreras Center for Immuno‐ and Gene Therapy Saarland University Medical School Homburg/Saar Germany
| | - Martin‐Leo Hansmann
- Dr. Senckenberg Institute of Pathology Goethe University Frankfurt am Main Germany
- Frankfurt Institute of Advanced Studies Frankfurt am Main Germany
| | - Sylvia Hartmann
- Dr. Senckenberg Institute of Pathology Goethe University Frankfurt am Main Germany
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de Mestral SG, Dubois R, Gibier JB, Humez S, Lefèvre G, Morschhauser F, Copin MC. CXCL13 is expressed in various haematological disorders other than angioimmunoblastic T-cell lymphoma. Pathol Res Pract 2020; 216:153004. [PMID: 32703483 DOI: 10.1016/j.prp.2020.153004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 04/26/2020] [Accepted: 05/07/2020] [Indexed: 10/24/2022]
Affiliation(s)
| | - Romain Dubois
- Univ. Lille, CHU Lille, Institut de Pathologie, Avenue Oscar Lambret, F-59000 Lille, France.
| | - Jean-Baptiste Gibier
- Univ. Lille, CHU Lille, Institut de Pathologie, Avenue Oscar Lambret, F-59000 Lille, France.
| | - Sarah Humez
- Univ. Lille, CHU Lille, Institut de Pathologie, Avenue Oscar Lambret, F-59000 Lille, France.
| | - Guillaume Lefèvre
- Univ. Lille, CHU Lille, Institut d'Immunologie, Avenue Oscar Lambret, F-59000 Lille, France.
| | - Franck Morschhauser
- Univ. Lille, CHU Lille, Clinique des Maladies du Sang, Centre de Biologie Pathologie, Avenue Oscar Lambret, F-59000 Lille, France.
| | - Marie-Christine Copin
- Univ. Lille, CHU Lille, Institut de Pathologie, Avenue Oscar Lambret, F-59000 Lille, France.
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12
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Nodular lymphocyte predominant Hodgkin lymphoma: pathology, clinical course and relation to T-cell/histiocyte rich large B-cell lymphoma. Pathology 2020; 52:142-153. [DOI: 10.1016/j.pathol.2019.10.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 10/11/2019] [Accepted: 10/14/2019] [Indexed: 12/11/2022]
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13
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Hodgkin lymphoma: a review of pathological features and recent advances in pathogenesis. Pathology 2020; 52:154-165. [DOI: 10.1016/j.pathol.2019.09.005] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 09/03/2019] [Accepted: 09/04/2019] [Indexed: 02/08/2023]
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14
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Sukswai N, Lyapichev K, Khoury JD, Medeiros LJ. Diffuse large B-cell lymphoma variants: an update. Pathology 2019; 52:53-67. [PMID: 31735345 DOI: 10.1016/j.pathol.2019.08.013] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2019] [Revised: 08/26/2019] [Accepted: 08/28/2019] [Indexed: 02/07/2023]
Abstract
Diffuse large B-cell lymphoma (DLBCL) is the most common type of lymphoma, representing approximately one-third of all cases worldwide. In the World Health Organization (WHO) classification of lymphomas, most cases of DLBCL are designated as not otherwise specified (NOS). About 20% of cases, however, are designated as specific variants of DLBCL. These variants, 13 in total, are specified on the basis of distinctive morphological or immunophenotypic findings or distinctive biological or clinical issues associated with their diagnoses. In this review we discuss the following variants: T-cell/histiocyte-rich large B-cell lymphoma; ALK-positive large B-cell lymphoma; plasmablastic lymphoma; intravascular large B-cell lymphoma; large B-cell lymphoma with IRF4 rearrangement; primary mediastinal large B-cell lymphoma; primary cutaneous diffuse large B-cell lymphoma, leg type; primary diffuse large B-cell lymphoma of the central nervous system; diffuse large B-cell lymphoma associated with chronic inflammation; lymphomatoid granulomatosis; primary effusion lymphoma; and HHV8-positive diffuse large B-cell lymphoma, NOS. Two additional variants recognised in the WHO classification, EBV-positive diffuse large B-cell lymphoma and EBV-positive mucocutaneous ulcer are discussed elsewhere in another review within this issue of Pathology. Although not recognised as a specific variant in the current WHO classification, primary testicular diffuse large B-cell lymphoma also has unique biological features and requires some modification of the standard treatment approach for patients with DLBCL. Therefore, we suggest that primary testicular diffuse large B-cell lymphoma also should be recognised as a specific variant of DLBCL in a future version of the WHO classification.
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Affiliation(s)
- Narittee Sukswai
- Department of Pathology, Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Kirill Lyapichev
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Joseph D Khoury
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - L Jeffrey Medeiros
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
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15
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Targeting PD-1 in cancer: Biological insights with a focus on breast cancer. Crit Rev Oncol Hematol 2019; 142:35-43. [DOI: 10.1016/j.critrevonc.2019.07.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2019] [Revised: 07/09/2019] [Accepted: 07/14/2019] [Indexed: 12/25/2022] Open
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16
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Abstract
The Hodgkin lymphomas are a family of unique lymphoma subtypes, in which the nature of the neoplastic cell was enigmatic for many years. Much of the mystery has been solved, with all forms now considered to be of B-cell origin, in most cases of germinal centre derivation. Today we recognize Hodgkin lymphoma as an eponym that encompasses multiple entities. One of the unifying themes is the major contribution from the tumour microenvironment. Both the character of the neoplastic cells and the nature of the immune environment are critical to accurate diagnosis. Moreover, an understanding of the molecular alterations that characterize both the neoplastic cells and their microenvironment have led to therapeutic advances, targeting both neoplastic and reactive components. Other conditions may foster a similar inflammatory milieu and lead to lymphoproliferations that mimic the Hodgkin lymphomas. In this review we provide an update on the diagnostic features of the various subtypes and include additional information relevant for prognostic evaluation and investigation of potential therapeutic targets. Additionally, we also discuss those conditions that often cause confusion in diagnosis and need to be distinguished from the Hodgkin lymphomas.
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Affiliation(s)
- Hao-Wei Wang
- From the Hematopathology Section, Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Jayalakshmi P Balakrishna
- From the Hematopathology Section, Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Stefania Pittaluga
- From the Hematopathology Section, Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
| | - Elaine S Jaffe
- From the Hematopathology Section, Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, Bethesda, MD, USA
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17
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Li W, Blessin NC, Simon R, Kluth M, Fischer K, Hube-Magg C, Makrypidi-Fraune G, Wellge B, Mandelkow T, Debatin NF, Pott L, Höflmayer D, Lennartz M, Sauter G, Izbicki JR, Minner S, Büscheck F, Uhlig R, Dum D, Krech T, Luebke AM, Wittmer C, Jacobsen F, Burandt E, Steurer S, Wilczak W, Hinsch A. Expression of the immune checkpoint receptor TIGIT in Hodgkin's lymphoma. BMC Cancer 2018; 18:1209. [PMID: 30514251 PMCID: PMC6280445 DOI: 10.1186/s12885-018-5111-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Accepted: 11/20/2018] [Indexed: 12/14/2022] Open
Abstract
Hodgkin's lymphoma (HL) is characterized by a high background of inflammatory cells which play an important role for the pathogenesis of the disease. T cell immunoreceptor with Ig and ITIM domains (TIGIT) is an inhibitory immune checkpoint receptor and a putative target for novel immunotherapies. To study patterns of TIGIT expression in the T cell background surrounding malignant cells including Hodgkin cells, Reed-Sternberg cells and histiocytic cells, a microenvironment (ME) tissue microarray (TMA) was constructed from tissue punches measuring 2 mm in diameter obtained from formalin-fixed tissue samples of Hodgkin's lymphoma lymph nodes (n = 40) and normal human tonsil (n = 2). The ME-TMA was stained by brightfield and fluorescence multiplex immunohistochemistry (IHC) to evaluate expression levels of TIGIT and PD-1 as well as standard lymphocyte markers (CD3, CD8, CD4, FOXP3) in the lymphocytic background. All analyzed cases of HL contained 9-99% (median: 86%) of TIGIT+ lymphoid cells. In general, TIGIT localized to the same cells as PD-1. Strikingly, expression levels of TIGIT and PD-1 were highly variable among the analyzed samples. Highest levels of TIGIT and PD-1 were found in one sample of nodular lymphocytic-predominant HL (NLPHL). In conclusion, TIGIT expression is highly variable between patients with Hodgkin's lymphoma. Our results encourage further studies evaluating the role of TIGIT as a target for immunotherapies in Hodgkin's lymphoma.
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Affiliation(s)
- Wenchao Li
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Niclas C Blessin
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Ronald Simon
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany.
| | - Martina Kluth
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | | | - Claudia Hube-Magg
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Georgia Makrypidi-Fraune
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Björn Wellge
- Department of General, Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Tim Mandelkow
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Nicolaus F Debatin
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Laura Pott
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Doris Höflmayer
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Maximilian Lennartz
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Guido Sauter
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Jakob R Izbicki
- Department of General, Visceral and Thoracic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Sarah Minner
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Franziska Büscheck
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Ria Uhlig
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - David Dum
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Till Krech
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Andreas M Luebke
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Corinna Wittmer
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Frank Jacobsen
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Eike Burandt
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Stefan Steurer
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Waldemar Wilczak
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
| | - Andrea Hinsch
- Department of Pathology, University Medical Center Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany
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18
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Composite t(14;18)-Negative Follicular Lymphoma and Nodular Lymphocyte-Predominant Hodgkin Lymphoma. Case Rep Hematol 2018; 2018:4312594. [PMID: 30155322 PMCID: PMC6098847 DOI: 10.1155/2018/4312594] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2018] [Revised: 07/05/2018] [Accepted: 07/15/2018] [Indexed: 12/31/2022] Open
Abstract
A composite lymphoma is the rare simultaneous occurrence of two or more distinct lymphomas within a single tissue or organ. Herein, we describe a case of a 51-year-old man presenting with a history of lower limb rash, fatigue, and bulky abdominopelvic lymphadenopathy. An excisional left iliac lymph node biopsy was notable for the composite presence of two distinct lymphoid neoplasms, nodular lymphocyte-predominant Hodgkin lymphoma (NLPHL), and follicular lymphoma (FL). Multiplex PCR and FISH analyses failed to demonstrate a t(14;18)(q32;q21) translocation in either composite lymphoma component. A clonal light-chain kappa (V/JC intron-kde) gene rearrangement was detected in the FL component only.
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19
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Jennewein L, Bartsch G, Gust K, Kvasnicka HM, Haferkamp A, Blaheta R, Mittelbronn M, Harter PN, Mani J. Increased tumor vascularization is associated with the amount of immune competent PD-1 positive cells in testicular germ cell tumors. Oncol Lett 2018; 15:9852-9860. [PMID: 29928359 PMCID: PMC6004709 DOI: 10.3892/ol.2018.8597] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Accepted: 01/22/2018] [Indexed: 12/12/2022] Open
Abstract
Testicular germ cell cancer in a metastatic state is curable with a cisplatin-based first line chemotherapy. However, 10-15% of these patients are resistant to first line chemotherapy and are thus left with only palliative options. Immunotherapies and inhibition of angiogenesis used in multiple types of cancer; however, the molecular context of angiogenesis and immune checkpoints in the development and progression of testicular cancers is still unknown. Therefore, the present study performed tissue micro array based analysis of 84 patients with immunohistochemistry of programmed cell death protein 1 (PD-1), programmed cell death ligand 1 (PD-L1) and vascular endothelial growth factor receptor 2 (VEGFR2) of testicular cancer and corresponding normal appearing testis tissue, matching the results with clinical data. The results demonstrated that PD-L1 was significantly upregulated in testicular tumors and that PD-1 positive cells significantly infiltrated the testicular tumor when compared with normal testicular tissue. VEGFR2 was significantly upregulated in testicular cancer. It was indicated that PD-1 expressing cytotoxic cells may require pathologic tumor vessels to pass the blood-testis-barrier in order to migrate into the tumor. Notably, when matching the clinical data for PD-1, PD-L1 and VEGFR2 there were no differences in expression in the different International Germ Cell Cancer Collaborative Group stages of non-seminoma. These data suggested that the anti-PD-1/PD-L1 immunotherapy and the anti-angiogenic therapy, sequentially or in combination, may be a promising option in the treatment of testicular cancer.
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Affiliation(s)
- Lukas Jennewein
- Neurological Institute (Edinger Institute), Goethe University, D-60528 Frankfurt/Main, Germany.,Department of Obstetrics and Gynecology, Goethe University, D-60590 Frankfurt/Main, Germany
| | - Georg Bartsch
- Department of Urology, Johannes Gutenberg University, D-55131 Mainz, Germany
| | - Kilian Gust
- Department of Urology, Medical University of Vienna, A-1090 Vienna, Austria
| | - Hans-Michael Kvasnicka
- Senckenberg Institute of Pathology, Goethe University of Frankfurt/Main, D-60590 Frankfurt/Main, Germany.,German Cancer Consortium (DKTK) and German Consortium for Translational Cancer Research (DKTK), D-69120 Heidelberg, Germany
| | - Axel Haferkamp
- Department of Urology, Johannes Gutenberg University, D-55131 Mainz, Germany
| | - Roman Blaheta
- Department of Urology, Goethe University, D-60590 Frankfurt/Main, Germany
| | | | - Patrick N Harter
- Neurological Institute (Edinger Institute), Goethe University, D-60528 Frankfurt/Main, Germany.,German Cancer Consortium (DKTK) and German Consortium for Translational Cancer Research (DKTK), D-69120 Heidelberg, Germany
| | - Jens Mani
- Department of Urology, Goethe University, D-60590 Frankfurt/Main, Germany
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20
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Witkowska M, Smolewski P. Immune Checkpoint Inhibitors to Treat Malignant Lymphomas. J Immunol Res 2018; 2018:1982423. [PMID: 29850620 PMCID: PMC5925139 DOI: 10.1155/2018/1982423] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2017] [Accepted: 02/05/2018] [Indexed: 12/31/2022] Open
Abstract
Genetic and/or epigenetic changes provide antigen-derived diversity in neoplastic cells. Beside, these cells do not initiate immune response of host organisms. A variety of factors are responsible for the resistant to treatment, including individual variations in patients and somatic cell genetic differences in tumors, even those from the same tissue of origin. Immune system is controlled by several controlling mechanisms. Recently, a significant progress in hematologic treatment has been made; however, majority of diseases still remain incurable. Immunotherapy with checkpoint inhibitors has emerged as promising modality of antitumor treatment, showing marked response to several antigens, including cytotoxic T lymphocyte-associate protein-4 (CTLA-4) or programmed cell death 1 receptor (PD-1). In this review, we demonstrate actual knowledge on immune checkpoint function and its impact on development of new modality of antineoplastic treatment, using, for example, anti-CTLA-4 or PD-1/PD1 ligand (PD-L1) monoclonal antibodies in malignant lymphomas.
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Affiliation(s)
- Magdalena Witkowska
- Department of Experimental Hematology, Medical University of Lodz, Lodz, Poland
| | - Piotr Smolewski
- Department of Experimental Hematology, Medical University of Lodz, Lodz, Poland
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21
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Zheng SM, Zhou DJ, Chen YH, Jiang R, Wang YX, Zhang Y, Xue HL, Wang HQ, Mou D, Zeng WZ. Pancreatic T/histiocyte-rich large B-cell lymphoma: A case report and review of literature. World J Gastroenterol 2017; 23:4467-4472. [PMID: 28706431 PMCID: PMC5487512 DOI: 10.3748/wjg.v23.i24.4467] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2017] [Revised: 04/26/2017] [Accepted: 06/01/2017] [Indexed: 02/06/2023] Open
Abstract
Primary pancreatic lymphoma (PPL) is an extremely rare form of extranodal malignant lymphoma. The most common histological subtype of PPL is diffuse large B cell lymphoma (DLBCL). In rare cases, PPL can also present as follicular lymphoma, small lymphocytic lymphoma, and T cell lymphoma either of non-Hodgkin’s lymphoma or of Hodgkin’s lymphoma. T-cell/histiocyte-rich large B-cell lymphoma (T/HRBCL) is an uncommon morphologic variant of DLBCL with aggressive clinical course, it is predominantly a nodal disease, but extranodal sites such as bone marrow, liver, and spleen can be involved. Pancreatic involvement of T/HRBCL was not presented before. Herein, we report a 48-year-old male who was hospitalized with complaints of jaundice, dark brown urine, pale stools, and nausea. The radiological evaluation revealed a pancreatic head mass and, following operative biopsy, the tumor was diagnosed as T/HRBCL. The patient achieved remission after six cycles of CHOP chemotherapy. Therefore, T/HRBCL can be treated similarly to the stage-matched DLBCL and both of them get equivalent outcomes after chemotherapy.
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MESH Headings
- Antineoplastic Combined Chemotherapy Protocols/therapeutic use
- Bile Ducts/diagnostic imaging
- Bile Ducts/surgery
- Biopsy
- Chemotherapy, Adjuvant/methods
- Cholangiopancreatography, Endoscopic Retrograde
- Choledochostomy
- Cyclophosphamide/therapeutic use
- Diagnosis, Differential
- Doxorubicin/therapeutic use
- Gastroenterostomy
- Histiocytes/pathology
- Hodgkin Disease/diagnosis
- Humans
- Jaundice/etiology
- Jaundice/surgery
- Jejunum/surgery
- Liver Function Tests
- Lymph Nodes/pathology
- Lymphatic Metastasis
- Lymphoma, Large B-Cell, Diffuse/complications
- Lymphoma, Large B-Cell, Diffuse/diagnosis
- Lymphoma, Large B-Cell, Diffuse/pathology
- Lymphoma, Large B-Cell, Diffuse/therapy
- Male
- Mesentery/pathology
- Middle Aged
- Nausea/etiology
- Nausea/surgery
- Pancreas/diagnostic imaging
- Pancreas/pathology
- Pancreatic Neoplasms/complications
- Pancreatic Neoplasms/diagnosis
- Pancreatic Neoplasms/pathology
- Pancreatic Neoplasms/therapy
- Pancreatitis/diagnosis
- Prednisone/therapeutic use
- Stomach/surgery
- Tomography, X-Ray Computed
- Vincristine/therapeutic use
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22
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McClanahan F, Sharp TG, Gribben JG. Catching up with solid tumor oncology: what is the evidence for a prognostic role of programmed cell death-ligand 1/programmed cell death-1 expression in B-cell lymphomas? Haematologica 2017; 101:1144-1158. [PMID: 27694502 DOI: 10.3324/haematol.2016.145904] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 05/27/2016] [Indexed: 12/18/2022] Open
Abstract
Therapeutic strategies targeting the programmed cell death-ligand 1/programmed cell death-1 pathway have shown significant responses and good tolerability in solid malignancies. Although preclinical studies suggest that inhibiting programmed cell death-ligand 1/programmed cell death-1 interactions might also be highly effective in hematological malignancies, remarkably few clinical trials have been published. Determining patients who will benefit most from programmed cell death-ligand 1/programmed cell death-1-directed immunotherapy and whether programmed cell death-ligand 1/programmed cell death-1 are adequate prognostic markers becomes an increasingly important clinical question, especially as aberrant programmed cell death-ligand 1/programmed cell death-1 expression are key mediators of impaired anti-tumor immune responses in a range of B-cell lymphomas. Herein, we systematically review the published literature on the expression and prognostic value of programmed cell death-ligand 1/programmed cell death-1 in these patients and identify considerable differences in expression patterns, distribution and numbers of programmed cell death-ligand 1+/programmed cell death-1+cells, both between and within lymphoma subtypes, which is reflected in conflicting findings regarding the prognostic value of programmed cell death-ligand 1+/programmed cell death-1+ cells. This can be partly explained by differences in methodologies (techniques, protocols, cutoff values) and definitions of positivity. Moreover, lymphomagenesis, disease progression, and prognosis appear to be determined not only by the presence, numbers and distribution of specific subtypes of T cells, but also by other cells and additional immune checkpoints. Collectively, our findings indicate that programmed cell death-ligand 1/programmed cell death-1 interactions play an essential role in B-cell lymphoma biology and are of clinical importance, but that the overall outcome is determined by additional components. To categorize the exact prognostic value of programmed cell death-ligand 1/programmed cell death-1 expressing cells and cell types, efforts should be made to harmonize their assessment and interpretation, optimally within ongoing clinical immune checkpoint inhibitor trials, and to identify and validate novel high-throughput platforms.
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Affiliation(s)
- Fabienne McClanahan
- Department of Haemato-Oncology, Barts Cancer Institute, Queen Mary University of London, UK Comprehensive Cancer Center, The Ohio State University, Columbus, OH, USA
| | - Thomas G Sharp
- Department of Haemato-Oncology, Barts Cancer Institute, Queen Mary University of London, UK
| | - John G Gribben
- Department of Haemato-Oncology, Barts Cancer Institute, Queen Mary University of London, UK
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23
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Abstract
Inhibitory molecules such as PD-1, CTLA-4, LAG-3, or TIM-3 play a role to keep a balance in immune function. However, many cancers exploit such molecules to escape immune surveillance. Accumulating data support that their functions are dysregulated in lymphoid neoplasms, including plasma cell myeloma, myelodysplastic syndrome, and acute myeloid leukemia. In lymphoid neoplasms, aberrations in 9p24.1 (PD-L1, PD-L2, and JAK2 locus), latent Epstein-Barr virus infection, PD-L1 3'-untranslated region disruption, and constitutive JAK-STAT pathway are known mechanisms to induce PD-L1 expression in lymphoma cells. Clinical trials demonstrated that PD-1 blockade is an attractive way to restore host's immune function in hematological malignancies, particularly classical Hodgkin lymphoma. Numerous clinical trials exploring PD-1 blockade as a single therapy or in combination with other immune checkpoint inhibitors in patients with hematologic cancers are under way. Although impressive clinical response is observed with immune checkpoint inhibitors in patients with certain cancers, not all patients respond to immune checkpoint inhibitors. Therefore, to identify best candidates who would have excellent response to checkpoint inhibitors is of utmost importance. Several possible biomarkers are available, but consensus has not been made and pursuit to discover the best biomarker is ongoing.
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Affiliation(s)
- Chi Young Ok
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030-4009 USA
| | - Ken H. Young
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, TX 77030-4009 USA
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24
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Ok CY, Young KH. Targeting the programmed death-1 pathway in lymphoid neoplasms. Cancer Treat Rev 2017; 54:99-109. [PMID: 28242522 PMCID: PMC5815314 DOI: 10.1016/j.ctrv.2017.01.009] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2016] [Revised: 01/23/2017] [Accepted: 01/29/2017] [Indexed: 12/31/2022]
Abstract
Programmed death-1 (PD-1) is a co-inhibitory molecule and is seen in CD4+ and CD8+ T cells. Upon binding to its ligands, programmed death ligand-1 (PD-L1) and -2 (PD-L2), PD-1 negatively regulates interleukin 2 (IL-2) production and T cell proliferation. Activated effector T-cells, which kill cancer cells, can be affected by PD-1 signaling in some lymphoid neoplasm that express PD-L1 or PD-L2. PD-L1 expression in tumor cells can be induced by extrinsic signal (i.e. interferon gamma) or intrinsic signals, such as genetic aberrations involving 9p24.1, latent Epstein-Barr virus infection, PD-L1 3'- untranslated region disruptions, and activated Janus kinase/signal transducer and activator of transcription (JAK/STAT) pathway. Anti-PD-1 therapy improves the overall response rate to treatment in patients with lymphoid neoplasms, particularly relapsed/refractory classical Hodgkin lymphoma. Inspired by their success in treating patients with classical Hodgkin lymphoma, medical practitioners have expanded PD-1 therapy, given as a single therapy or in combination with other drugs, to patients with other types of lymphoma. In this review, current clinical trials with anti-PD-1 or anti-PD-L1 drugs are summarized. The results of numerous clinical trials will broaden our understanding of PD-1 pathway and shall expand the list of patients who will get benefit from these agents including those who suffer from lymphoid neoplasms.
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Affiliation(s)
- Chi Young Ok
- The Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
| | - Ken H Young
- The Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
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25
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The Pathobiology and Treatment of Hodgkin Lymphoma. Where do We go from Gianni Bonadonna's Lesson? TUMORI JOURNAL 2017; 103:101-113. [DOI: 10.5301/tj.5000608] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/13/2017] [Indexed: 01/18/2023]
Abstract
This article reviews the evolution of the diagnosis and treatment of Hodgkin lymphoma (HL) since its discovery in 1832. The morphological, phenotypic and molecular characteristics of both nodular lymphocyte-predominant HL and classical HL are revised in the light of recent molecular information and possible impact on the identification of risk groups as well as the use of targeted therapies. The seminal contribution of Gianni Bonadonna to developing new treatment strategies for both advanced and early-stage HL is highlighted.
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26
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Hartmann S, Hansmann ML. [Update on nodular lymphocyte predominant Hodgkin's lymphoma and related lesions]. DER PATHOLOGE 2016; 38:3-10. [PMID: 27999937 DOI: 10.1007/s00292-016-0257-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The present article gives an overview of novel developments in the diagnosis of nodular lymphocyte predominant Hodgkin's lymphoma with reference to the revised WHO classification from 2016. Differential diagnoses that are discussed are progressively transformed germinal centers, T cell/histiocyte-rich large B cell lymphoma as well as transformation into a diffuse large B cell lymphoma.
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Affiliation(s)
- S Hartmann
- Dr. Senckenbergisches Institut für Pathologie, Klinikum der Goethe Universität Frankfurt, Theodor-Stern-Kai 7, Frankfurt am Main, Deutschland.
| | - M-L Hansmann
- Dr. Senckenbergisches Institut für Pathologie, Klinikum der Goethe Universität Frankfurt, Theodor-Stern-Kai 7, Frankfurt am Main, Deutschland.
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27
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Characterization of the Microenvironment of Nodular Lymphocyte Predominant Hodgkin Lymphoma. Int J Mol Sci 2016; 17:ijms17122127. [PMID: 27999289 PMCID: PMC5187927 DOI: 10.3390/ijms17122127] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 12/09/2016] [Accepted: 12/12/2016] [Indexed: 12/22/2022] Open
Abstract
Nodular lymphocyte predominant Hodgkin lymphoma (NLPHL) is characterized by a low percentage of neoplastic lymphocyte predominant (LP) cells in a background of lymphocytes. The goal of this study is to characterize the microenvironment in NLPHL. Ten NLPHL cases and seven reactive lymph nodes (RLN) were analyzed by flow cytometry for the main immune cells and multiple specific subpopulations. To discriminate between cells in or outside the tumor cell area, we used CD26. We observed significantly lower levels of CD20+ B-cells and CD56+ NK cells and higher levels of CD4+ T-cells in NLPHL in comparison to RLN. In the subpopulations, we observed increased numbers of PD-1+CD4+ T follicular helper cells (TFH), CD69+CD4+ and CD69+CD8+ T-cells and CCR7-CD45RA-CD4+ effector memory T-cells, while FoxP3+CD4+ T regulatory cells (Tregs) and CCR7-CD45RA+ terminally differentiated CD4+ T-cells were decreased in NLPHL compared to RLN. CD69+ cells were increased in the tumor cell area in CD4+ and CD8+ T-cells, while FoxP3+CD25+CD4+ Tregs and CD25+CD8+ T-cells were significantly increased outside the tumor area. Thus, we show a markedly altered microenvironment in NLPHL, with lower numbers of NK cells and Tregs. PD-1+CD4+ and CD69+ T-cells were located inside, and Tregs and CD25+CD8+ cells outside the tumor cell area.
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Cheng CL, O'Connor S. T cell-rich lymphoid infiltrates with large B cells: a review of key entities and diagnostic approach. J Clin Pathol 2016; 70:187-201. [PMID: 27895166 DOI: 10.1136/jclinpath-2016-204065] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Accepted: 11/01/2016] [Indexed: 12/18/2022]
Abstract
Accurate diagnostic interpretation of a lymphoid population composed predominantly of small T cells, together with smaller numbers of large B cells, with or without a nodular architecture, is a common problem faced by the histopathologist. The differential diagnosis of this histological pattern is wide, ranging from reactive conditions such as drug reactions and viral infections, through borderline entities such as immunodeficiency-related lymphoproliferative disorders to lymphomas. The latter includes entities where the large B cells are primarily neoplastic (classical and nodular lymphocyte-predominant Hodgkin lymphomas and T cell/histiocyte-rich large B cell lymphoma) as well as T cell lymphomas such as angioimmunoblastic T cell lymphoma where the large B cells represent an epiphenomenon and may or may not be neoplastic. Several rare variants of these conditions, and the fact that treatment can significantly modify appearances, add to the diagnostic difficulty of these pathological entities. Unlike monomorphic lymphoid infiltrates, the histological pattern of T cell-rich proliferation with large B cells requires close evaluation of the inter-relationship between B cells and T cells, follicular dendritic cells and sometimes other inflammatory cells. Epstein-Barr virus plays a key role in several of these scenarios, and interpreting not only its presence but also its distribution within cellular subgroups is essential to accurate diagnosis and the avoidance of some important diagnostic pitfalls. An understanding of normal immunoarchitecture and lymphoid maturational pathways is also fundamental to resolving these cases, as is a knowledge of their common patterns of spread, which facilitates correlation with clinical and radiological findings.
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Affiliation(s)
- Chee Leong Cheng
- Anatomical Pathology Department, Singapore General Hospital, Singapore, Singapore
| | - Simon O'Connor
- Haematological Malignancy Diagnostic Service, Centre for Molecular Pathology, The Royal Marsden Hospital, Sutton, London, UK
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Sun R, Medeiros LJ, Young KH. Diagnostic and predictive biomarkers for lymphoma diagnosis and treatment in the era of precision medicine. Mod Pathol 2016; 29:1118-42. [PMID: 27363492 DOI: 10.1038/modpathol.2016.92] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2016] [Revised: 04/13/2016] [Accepted: 04/14/2016] [Indexed: 02/07/2023]
Abstract
Lymphomas are a group of hematological malignancies derived from lymphocytes. Lymphomas are clinically and biologically heterogeneous and have overlapping diagnostic features. With the advance of new technologies and the application of efficient and feasible detection platforms, an unprecedented number of novel biomarkers have been discovered or are under investigation at the genetic, epigenetic, and protein level as well as the tumor microenvironment. These biomarkers have enabled new clinical and pathological insights into the mechanisms underlying lymphomagenesis and also have facilitated improvements in the diagnostic workup, sub-classification, outcome stratification, and personalized therapy for lymphoma patients. However, integrating these biomarkers into clinical practice effectively and precisely in daily practice is challenging. More in-depth studies are required to further validate these novel biomarkers and to assess other parameters that can affect the reproducibility of these biomarkers such as the selection of detection methods, biological reagents, interpretation of data, and cost efficiency. Despite these challenges, there are many reasons to be optimistic that novel biomarkers will facilitate better algorithms and strategies as we enter a new era of precision medicine to better refine diagnosis, prognostication, and rational treatment design for patients with lymphomas.
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Affiliation(s)
- Ruifang Sun
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.,Department of Pathology, Shanxi Cancer Hospital, Shanxi, China
| | - L Jeffrey Medeiros
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Ken H Young
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.,The University of Texas Graduate School of Biomedical Science, Houston, TX, USA
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Slack GW. The Pathology of Reactive Lymphadenopathies: A Discussion of Common Reactive Patterns and Their Malignant Mimics. Arch Pathol Lab Med 2016; 140:881-92. [DOI: 10.5858/arpa.2015-0482-sa] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Context.—Distinguishing between a reactive and a neoplastic lymphoid proliferation is a clinically significant task frequently performed by the surgical pathologist in routine practice.
Objectives.—To highlight common situations in lymph node pathology where reactive changes and lymphoma may be misdiagnosed.
Data Sources.—Data sources are peer-reviewed journal articles, textbooks, and clinical experience.
Conclusions.—This review aims to refresh and enhance the surgical pathologist's awareness of the shared and distinguishing features of select reactive and neoplastic lymphoproliferations, which in turn will allow the surgical pathologist to make more accurate diagnoses and avoid the pitfalls of misdiagnosis. This will be done by describing a selection of commonly encountered reactive histologic changes observed in lymph nodes, present the lymphomas with which they share overlapping features, outline the features that distinguish them, and describe an approach to making an accurate diagnosis and avoiding a misdiagnosis in each scenario.
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Affiliation(s)
- Graham W. Slack
- From the Department of Pathology and Laboratory Medicine, British Columbia Cancer Agency, Vancouver, British Columbia, Canada
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Abstract
PURPOSE OF REVIEW The development of 'immune checkpoint inhibitors' or drugs targeting the programmed death-1 (PD-1)/programmed death-ligand 1 (PD-L1) axis has been a stunning success of cancer immunotherapy. This review provides a timely overview of the biology and function of the PD-1 pathway and discusses the rationale for therapeutic inhibition of this pathway in lymphoma. RECENT FINDINGS Recent studies have evaluated the prevalence and prognostic implications of PD-1, PD-L1/2 expression in various lymphoma subtypes. We present an overview of the clinical trials evaluating pidilizumab, nivolumab, and pembrolizumab in patients with lymphoid malignancies, and highlight some of the more promising agents in this class, currently in development. Finally, we discuss biomarkers that may predict response to therapy in patients with lymphoma across these clinical trials. SUMMARY A plethora of clinical trials are in progress testing immune checkpoint inhibitors in many subtypes of lymphoma, which will define their role both as a monotherapy and in combination with other biologic agents.
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T Cell/Histiocyte-Rich Large B Cell Lymphoma of the Thymus: A Diagnostic Pitfall. Case Rep Hematol 2016; 2016:2942594. [PMID: 26904321 PMCID: PMC4745624 DOI: 10.1155/2016/2942594] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Accepted: 01/05/2016] [Indexed: 12/16/2022] Open
Abstract
T cell/histiocyte-rich large B cell lymphoma (THRLBCL) is predominantly a nodal disease, with extranodal involvement, such as bone marrow, spleen, and liver. However, primary THRLBCL has never been reported in the thymus in the English literature. Here we report a case of THRLBCL presenting as mediastinal mass and lymphadenopathy. Based on the frozen section diagnosis of "thymoma," a 12 cm mass was excised. A year later she developed multiple enlarged lymph nodes and pulmonary nodules. Consultant review of the excised mediastinal mass showed scattered large atypical cells that were CD20+ and PAX-5+ and negative for pan-cytokeratin, AE1, and AE3, compatible with THRLBCL and excluding thymoma. The excised lymph nodes were replaced by diffuse infiltrate of small CD3+ lymphocytes and histiocytes with intermingled large CD20+ B lymphoma cells scattered throughout the section. A diagnosis of THRLBCL was made in lymph node, similar to previous thymic lesion. A clonal rearrangement of immunoglobulin heavy chain (IGH) gene was detected, further supporting the diagnosis. This is the first reported case of THRLBCL in thymus. Correct recognition of this entity is critical, because of the difference in therapeutic impact on these patients.
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Eladl AE, Satou A, Elsayed AA, Suzuki Y, Shimizu-Kohno K, Kato S, Tomita A, Kinoshita T, Nakamura S, Asano N. Nodular lymphocyte predominant Hodgkin lymphoma: Clincopathological study of 25 cases from Japan with a reappraisal of tissue associated macrophages. Pathol Int 2015; 65:652-60. [PMID: 26538151 DOI: 10.1111/pin.12357] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Accepted: 10/06/2015] [Indexed: 01/03/2023]
Abstract
Clinicopathological features of 25 nodular lymphocyte predominant Hodgkin lymphoma (NLPHL) patients in Japan were analysed. To investigate the clinicopathological significance of tissue associated macrophages (TAM) in NLPHL, CD68 and CD163 expression were investigated. The median age at onset was 56 years (range: 6-82 years) with male predominance (64%). All patients presented with lymph node enlargement with predilection for cervical LNs. Seven cases (28%) had mediastinal lesion and four (16%) had extranodal involvement. Most cases (76%) presented with early clinical stages. After median follow up of 44 months, both of overall and progression free survival rates were 95%. The presence of >5% CD68+ TAM in NLPHL was significantly associated with older age at diagnosis (median, 71 vs 52.5 years; P = 0.048), lower hemoglobin level (33.3% vs 0%; P = 0.037) and lower CR rate after initial treatment (42.9% vs 91.7%; P = 0.038). The presence of >5% CD163+ TAM was significantly correlated with presence of B symptoms (40% vs 0%; P = 0.036). In conclusion, NLPHL is rare among Japanese and appears to present at an older age than among Western patients. In our series, the presence of >5% CD68+ TAM in NLPHL was associated with lower CR rate, but with no impact on patients' survival.
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Affiliation(s)
- Ahmed E Eladl
- Department of Pathology and Laboratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan.,Department of Pathology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Akira Satou
- Department of Pathology and Laboratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Ahmed Ali Elsayed
- Department of Pathology and Laboratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan.,Department of Pathology, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| | - Yuka Suzuki
- Department of Pathology and Laboratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kei Shimizu-Kohno
- Department of Pathology and Laboratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Seiichi Kato
- Department of Pathology and Laboratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Akihiro Tomita
- Department of Hematology and Oncology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Tomohiro Kinoshita
- Department of Hematology and Cell Therapy, Aichi Cancer Center, Nagoya, Japan
| | - Shigeo Nakamura
- Department of Pathology and Laboratory Medicine, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Naoko Asano
- Department of Molecular Diagnostics, Nagano Prefectural Suzaka Hospital, Suzaka, Japan
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McKay P, Fielding P, Gallop-Evans E, Hall GW, Lambert J, Leach M, Marafioti T, McNamara C. Guidelines for the investigation and management of nodular lymphocyte predominant Hodgkin lymphoma. Br J Haematol 2015; 172:32-43. [PMID: 26538004 DOI: 10.1111/bjh.13842] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Pamela McKay
- Department of Haematology; Beatson West of Scotland Cancer Centre; Gartnavel Hospital; Glasgow UK
| | - Patrick Fielding
- PETIC; Department of Radiology; University Hospital of Wales; Cardiff UK
| | - Eve Gallop-Evans
- Department of Clinical Oncology; Velindre Cancer Centre; Cardiff UK
| | - Georgina W. Hall
- Paediatric Haematology/Oncology Unit; Children's Hospital; John Radcliffe Hospital; Headington Oxford
| | - Jonathan Lambert
- Department of Haematology; University College London Hospitals; London UK
| | - Mike Leach
- Department of Haematology; Beatson West of Scotland Cancer Centre; Gartnavel Hospital; Glasgow UK
| | - Teresa Marafioti
- Department of Pathology; University College London Hospitals; London UK
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Hartmann S, Winkelmann R, Metcalf RA, Treetipsatit J, Warnke RA, Natkunam Y, Hansmann ML. Immunoarchitectural patterns of progressive transformation of germinal centers with and without nodular lymphocyte-predominant Hodgkin lymphoma. Hum Pathol 2015; 46:1655-61. [DOI: 10.1016/j.humpath.2015.07.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2015] [Revised: 06/26/2015] [Accepted: 07/08/2015] [Indexed: 10/23/2022]
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Xia Y, Jeffrey Medeiros L, Young KH. Signaling pathway and dysregulation of PD1 and its ligands in lymphoid malignancies. Biochim Biophys Acta Rev Cancer 2015; 1865:58-71. [PMID: 26432723 DOI: 10.1016/j.bbcan.2015.09.002] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2015] [Revised: 09/24/2015] [Accepted: 09/26/2015] [Indexed: 12/12/2022]
Abstract
Tumor cells evade immune destruction, at least partially, by upregulating inhibitory signals to limit effector T cell activation. Programmed death 1 (PD-1) is one of the most critical co-inhibitory molecules limiting the T-cell antitumor response. PD-1 and its ligands, PD-L1 and PD-L2, are overexpressed by various types of tumors as well as reactive cells in the tumor microenvironment. A growing body of evidence has shown the clinical efficiency and minimal toxicity of PD-1 pathway inhibitors in patients with solid tumors, but the role of these inhibitors in lymphoid malignancies is much less well studied. In this review, we analyze the pathologic role of the PD-1 pathway in most common lymphoid malignancies and we organize the clinical data from clinical trials of PD-1 pathway inhibitors. Several anti-PD-1 regimens have shown encouraging therapeutic effects in patients with relapsed or refractory Hodgkin lymphoma, follicular lymphoma, and diffuse large B-cell lymphoma. Additional progress is needed to foster an improved understanding of the role of anti-PD-1 therapy in reconstituting antitumor immunity in patients with lymphoid malignancies. Upcoming trials will explore the clinical efficiency of combining PD-1 pathway inhibitors and various agents with diverse mechanisms of action and create more therapeutic possibilities for afflicted patients.
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Affiliation(s)
- Yi Xia
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - L Jeffrey Medeiros
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Ken H Young
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA; The University of Texas Graduate School of Biomedical Science, Houston, TX, USA.
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Sattarzadeh A, Diepstra A, Rutgers B, van den Berg A, Visser L. CD57+ T-cells are a subpopulation of T-follicular helper cells in nodular lymphocyte predominant Hodgkin lymphoma. Exp Hematol Oncol 2015; 4:27. [PMID: 26380151 PMCID: PMC4570656 DOI: 10.1186/s40164-015-0022-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Accepted: 09/03/2015] [Indexed: 01/15/2023] Open
Abstract
Background Nodular lymphocyte predominant Hodgkin lymphoma (NLPHL) is characterized by lymphocyte-predominant (LP) cells in a background of CD4+ CD57+ T-cells. These cells are normally present in the germinal center of lymphoid tissues. The cells rosetting LP cells are described to be PD-1 and BCL-6 positive, which are markers of T-follicular helper cells. This study was designed to address the question: are the CD57+ T cells in germinal centers of tonsil and NLPHL TFH cells? Results Immunohistochemistry was performed on tonsil and NLPHL. For tonsil, cells per germinal center and for NLPHL, the area around LP cells was counted. Cells rosetting LP cells were also determined. In addition, flowcytometry
was performed on cell suspensions. Cells directly rosetting LP cells are positive for CD57 and/or for two markers of T-follicular helper (TFH) cells, PD-1 and BCL-6. We show that in both tonsil and NLPHL more than 90 % of CD57+ T-cells are also positive for PD-1, whereas roughly half of the PD-1+ T-cells are CD57+. CD57+ cells co-express BCL-6 in tonsil and in the rosetting cells of NLPHL. Conclusions We conclude that CD57+ T-cells are TFH cells and form a subpopulation of TFH cells in tonsils and NLPHL.
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Affiliation(s)
- Ahmad Sattarzadeh
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Arjan Diepstra
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Bea Rutgers
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Anke van den Berg
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Lydia Visser
- Department of Pathology and Medical Biology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
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Wu D, Thomas A, Fromm JR. Reactive T cells by flow cytometry distinguish Hodgkin lymphomas from T cell/histiocyte-rich large B cell lymphoma. CYTOMETRY PART B-CLINICAL CYTOMETRY 2015; 90:424-32. [DOI: 10.1002/cyto.b.21261] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2015] [Revised: 05/21/2015] [Accepted: 06/02/2015] [Indexed: 11/07/2022]
Affiliation(s)
- David Wu
- Department of Laboratory Medicine; University of Washington; Seattle Washington 98109
| | - Anju Thomas
- Department of Laboratory Medicine; University of Washington; Seattle Washington 98109
| | - Jonathan R. Fromm
- Department of Laboratory Medicine; University of Washington; Seattle Washington 98109
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Abstract
Cancers can evade the host immune system by inducing upregulation of immune inhibitory signals. Anti-programmed cell death-1 (PD-1) monoclonal antibodies block these inhibitory signals allowing the host to mount an immune response against malignant cells. This class of drugs is active in solid tumours, where upregulation of cell-surface PD-1 ligand proteins is nearly uniform. Because lymphoma is a malignancy of immune system cells, the role of the PD-1 pathway in these neoplasms is more complex. However, early clinical trials using PD-1 inhibitors have shown significant clinical activity in various subtypes of relapsed lymphoma. In this Review, we assess the scientific literature on the role of the PD-1 pathway in lymphoma, the relevant clinical data for PD-1 inhibition, and future strategies for this next generation of anticancer agents.
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Affiliation(s)
- Eliza A Hawkes
- Department of Medical Oncology and Clinical Haematology, Olivia Newton John Cancer and Wellness Centre, Austin Hospital, Melbourne, VIC, Australia; Department of Medical Oncology, Eastern Health, Melbourne, VIC Australia; Monash University, Melbourne, VIC, Australia.
| | - Andrew Grigg
- Department of Medical Oncology and Clinical Haematology, Olivia Newton John Cancer and Wellness Centre, Austin Hospital, Melbourne, VIC, Australia; University of Melbourne, Melbourne, VIC, Australia
| | - Geoff Chong
- Department of Medical Oncology and Clinical Haematology, Olivia Newton John Cancer and Wellness Centre, Austin Hospital, Melbourne, VIC, Australia; Department of Oncology, Northern Hospital, Melbourne, VIC, Australia; Department of Medical Oncology, Ballarat Health Services, Ballarat, VIC, Australia
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Aggressive B-cell lymphomas: a review and practical approach for the practicing pathologist. Adv Anat Pathol 2015; 22:168-80. [PMID: 25844675 DOI: 10.1097/pap.0000000000000065] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Recent advances in diffuse large B-cell lymphoma are changing the way pathologists approach, diagnose, and report on this heterogeneous group of lymphomas. The purpose of this review is to provide a practical yet comprehensive approach to diffuse large B-cell lymphoma and aggressive B-cell lymphomas that can be used and easily interpreted by pathologists at all levels of training. It will address important concepts and current testing modalities which provide important prognostic information for the clinician when considering appropriate chemotherapeutic regimens for each patient's lymphoma diagnosis. It will also provide some insights into recently reported signaling pathways and molecular alterations and their contribution to lymphomagenesis and how identifying these abnormalities may provide future potential therapeutic targets for these aggressive lymphomas.
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Treetipsatit J, Metcalf RA, Warnke RA, Natkunam Y. Large B-cell lymphoma with T-cell–rich background and nodules lacking follicular dendritic cell meshworks: description of an insufficiently recognized variant. Hum Pathol 2015; 46:74-83. [DOI: 10.1016/j.humpath.2014.09.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Revised: 09/01/2014] [Accepted: 09/25/2014] [Indexed: 01/12/2023]
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Shet T, Panjwani P, Epari S, Sengar M, Prasad M, Arora B, Laskar S, Gujral S, Menon H, Banavali S. A simplified scoring system to document variant patterns in nodular lymphocyte predominant Hodgkin lymphoma. Leuk Lymphoma 2014; 56:1651-8. [PMID: 25248885 DOI: 10.3109/10428194.2014.961013] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
This study sought to quantify variant patterns in nodular lymphocyte predominant Hodgkin lymphoma (NLPHL) using a three tier scoring system assessing five parameters, namely: (a) percentage of nodularity scored from 100 % to < 75%, (b) T cell rich areas (< 20% to > 50%), (c) type of nodules, (d) dendritic network, intact or lost, and (e) extranodular distribution of lymphocyte predominant cells (< 15% to > 50%), with final scores from 0 to 10. In the 72 patients assessed, the 5-year disease-free survival (DFS) in patients with score ≤ 6 was 92% vs. 20% in those with scores > 6. The 5-year overall survival was 100% in patients with scores ≤ 6 and 87% in those with scores > 6. In the multivariate Cox regression analysis, scores > 6 and stage impacted DFS. This scoring system was effective in stratifying patients with NLPHL with variant patterns and could be used for the management of patients.
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Affiliation(s)
- Tanuja Shet
- Department of Pathology, Tata Memorial Hospital , Parel, Mumbai , India
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Nodular Lymphocyte Predominant Hodgkin Lymphoma versus T-Cell/Histiocyte-Rich Large B-Cell Lymphoma: A Diagnostic Challenge. Case Rep Pathol 2014; 2014:956217. [PMID: 25110597 PMCID: PMC4109592 DOI: 10.1155/2014/956217] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2014] [Accepted: 06/25/2014] [Indexed: 01/22/2023] Open
Abstract
Lymphomas with overlapping histological features of two distinct entities cause difficulty in classification. Their classification is of particular significance when the two alternatives require different treatment modalities. We present a diagnostically challenging case of a nodular lymphocyte predominant Hodgkin lymphoma (NLPHL) with features of T-cell/histiocyte-rich large B-cell lymphoma (THRLBCL). Our patient is a 39-year-old woman who presented with painless subclavicular and axillary lymphadenopathy. The biopsied lymph node showed diffuse architectural effacement and scattered large neoplastic cells with large irregular nuclei and prominent nucleoli. These cells were positive for CD20 and Bcl-6 and negative for CD15, CD30, IgD, and Bcl-2. The background cells were predominantly T lymphocytes, whereas B cells were markedly depleted. The lymph node was interpreted as NLPHL, consistent with THRLBCL-like variant. NLPHL, especially THRLBC-like variant, and de novo THRLBCL are characterized by significant morphologic and immunophenotypic overlap. Our case demonstrates a rare predominance of background T-cells in NLPHL and emphasizes the importance of thorough evaluation of multiple morphologic and immunophenotypic features as an essential approach for arriving at the correct diagnosis.
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Hartmann S, Hansmann ML. Large B-cell lymphoma rich in PD-1+ T cells: an overlooked subtype of diffuse large B-cell lymphoma? Am J Clin Pathol 2014; 142:142-3. [PMID: 25015852 DOI: 10.1309/ajcpdjpwt4lllaqg] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Affiliation(s)
- Sylvia Hartmann
- Dr Senckenberg Institute of Pathology, Goethe University, Frankfurt am Main, Germany
| | - Martin-Leo Hansmann
- Dr Senckenberg Institute of Pathology, Goethe University, Frankfurt am Main, Germany
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46
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Expression of PD-1 (CD279) and FoxP3 in diffuse large B-cell lymphoma. Virchows Arch 2014; 465:351-8. [DOI: 10.1007/s00428-014-1615-5] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2014] [Revised: 05/29/2014] [Accepted: 06/19/2014] [Indexed: 12/20/2022]
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47
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Cogbill CH, Swerdlow SH, Gibson SE. Utility of CD279/PD-1 immunohistochemistry in the evaluation of benign and neoplastic T-cell-rich bone marrow infiltrates. Am J Clin Pathol 2014; 142:88-98. [PMID: 24926091 DOI: 10.1309/ajcpwf77vognovzu] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
OBJECTIVES CD279 expression is used to help identify angioimmunoblastic T-cell lymphoma (AITL) or other T-cell lymphomas of T-follicular helper (TFH) cell origin; however, its utility in assessing lymphoid infiltrates in the bone marrow (BM) is not well established. METHODS Immunohistochemistry for CD279 was performed on normal staging BM and in BM with benign lymphoid aggregates (LAs), AITLs, and other T-cell lymphomas. RESULTS Seven of 10 staging BMs demonstrated scattered, usually weakly CD279+ cells. Thirty-four of 38 BMs had scattered weakly/variably intense CD279+ cells within LAs, but only four contained 11% to 25% CD279+ cells. Three of four AITLs were strongly CD279+, but one contained only around 10% CD279+ cells. Eleven of the other 38 T-cell lymphomas were CD279+, including five possible AITLs; four peripheral T-cell lymphomas, not otherwise specified; and two T-cell large granular lymphocytic leukemias. CONCLUSIONS Although useful in assessing selected BM lymphoid infiltrates, CD279 expression may be limited in AITLs, is not specific for TFH lymphomas, and can be seen in benign lymphoid infiltrates, although without extensive strong positivity.
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Affiliation(s)
| | - Steven H. Swerdlow
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA
| | - Sarah E. Gibson
- Department of Pathology, University of Pittsburgh School of Medicine, Pittsburgh, PA
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Pathobiology of hodgkin lymphoma. Mediterr J Hematol Infect Dis 2014; 6:e2014040. [PMID: 24959337 PMCID: PMC4063617 DOI: 10.4084/mjhid.2014.040] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2014] [Accepted: 04/17/2014] [Indexed: 02/01/2023] Open
Abstract
Hodgkin's lymphoma is a lymphoid tumour that represents about 1% of all de novo neoplasms occurring every year worldwide. Its diagnosis is based on the identification of characteristic neoplastic cells within an inflammatory milieu. Molecular studies have shown that most, if not all cases, belong to the same clonal population, which is derived from peripheral B-cells. The relevance of Epstein-Barr virus infection at least in a proportion of patients was also demonstrated. The REAL/WHO classification recognizes a basic distinction between nodular lymphocyte predominance HL (NLPHL) and classic HL (CHL), reflecting the differences in clinical presentation, behavior, morphology, phenotype, molecular features as well as in the composition of their cellular background. CHL has been classified into four subtypes: lymphocyte rich, nodular sclerosing, mixed cellularity and lymphocyte depleted. Despite its well known histological and clinical features, Hodgkin's lymphoma (HL) has recently been the object of intense research activity, leading to a better understanding of its phenotype, molecular characteristics and possible mechanisms of lymphomagenesis.
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Romano A, Vetro C, Caocci G, Greco M, Parrinello NL, Di Raimondo F, La Nasa G. Immunological deregulation in classic hodgkin lymphoma. Mediterr J Hematol Infect Dis 2014; 6:e2014039. [PMID: 24959336 PMCID: PMC4063611 DOI: 10.4084/mjhid.2014.039] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Accepted: 05/06/2014] [Indexed: 01/19/2023] Open
Abstract
Classic Hodgkin Lymphoma (cHL) has a unique histology since only a few neoplastic cells are surrounded by inflammatory accessory cells that in the last years have emerged as crucial players in sustaining the course of disease. In addition, recent studies suggest that the abnormal activity of these inflammatory cells (such as deregulation in regulatory T cells signaling, expansion of myeloid derived suppressor cells, HLA-G signaling and natural killer cells dysfunction) may have prognostic significance. This review is focused on summarizing recent advanced in immunological defects in cHL with translational implications.
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Affiliation(s)
- Alessandra Romano
- Division of Haematology, Azienda Ospedaliera “Policlinico-Vittorio Emanuele”, University of Catania. Via Citelli 6, 95124 Catania, Italy
| | - Calogero Vetro
- Division of Haematology, Azienda Ospedaliera “Policlinico-Vittorio Emanuele”, University of Catania. Via Citelli 6, 95124 Catania, Italy
| | - Giovanni Caocci
- Hematology Unit, Department of Medical Sciences “Mario Aresu,” University of Cagliari, Italy
| | - Marianna Greco
- Hematology Unit, Department of Medical Sciences “Mario Aresu,” University of Cagliari, Italy
| | - Nunziatina Laura Parrinello
- Division of Haematology, Azienda Ospedaliera “Policlinico-Vittorio Emanuele”, University of Catania. Via Citelli 6, 95124 Catania, Italy
| | - Francesco Di Raimondo
- Division of Haematology, Azienda Ospedaliera “Policlinico-Vittorio Emanuele”, University of Catania. Via Citelli 6, 95124 Catania, Italy
| | - Giorgio La Nasa
- Hematology Unit, Department of Medical Sciences “Mario Aresu,” University of Cagliari, Italy
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Huppmann AR, Nicolae A, Slack GW, Pittaluga S, Davies-Hill T, Ferry JA, Harris NL, Jaffe ES, Hasserjian RP. EBV may be expressed in the LP cells of nodular lymphocyte-predominant Hodgkin lymphoma (NLPHL) in both children and adults. Am J Surg Pathol 2014; 38:316-24. [PMID: 24525501 PMCID: PMC3927152 DOI: 10.1097/pas.0000000000000107] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Nodular lymphocyte-predominant Hodgkin lymphoma (NLPHL) and classical Hodgkin lymphoma (CHL) are classified separately because of their distinct clinical and pathologic features. Whereas Epstein-Barr virus (EBV) is detected in the neoplastic cells of 25% to 70% of CHL, NLPHL is generally considered to be EBV(-). We assessed EBV status in 302 pediatric and adult cases of NLPHL. A total of 145 pediatric (age 18 y or younger) and 157 adult cases of NLPHL were retrieved from 3 North American centers and tested for EBV by in situ hybridization (EBV-encoded small RNA). Clinical and pathologic features were analyzed. Five (3.4%) pediatric and 7 (4.5%) adult NLPHL cases contained EBV(+) lymphocyte-predominant (LP) cells. Although all 12 cases met the criteria for diagnosis of NLPHL, atypical features were present, including capsular fibrosis, atrophic germinal centers, and pleomorphic or atypical LP cells. CD20 and OCT-2 were strongly and diffusely positive in all except 1 case. However, PAX5 and CD79a were weak and/or variable in 7/8 and 6/6 cases tested, respectively. EBV(+) cases were more likely to be CD30(+) (75%) compared with EBV(-) cases (25%) (P=0.0007); CD15 was negative in all cases. Our results show that EBV(+) LP cells may occur in NLPHL. Distinguishing EBV(+) NLPHL from CHL can be challenging, as EBV(+) NLPHL can have partial expression of CD30 and weak PAX5 staining as well as pleomorphic-appearing LP cells. However, the overall appearance and maintenance of B-cell phenotype, with strong and diffuse CD20 and OCT-2 expression, support the diagnosis of NLPHL in these cases.
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