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Maeda R, Minowa T, Kato J, Horimoto K, Sato S, Hirohashi Y, Torigoe T, Uhara H. Analysis of the immune microenvironment in the indolent form of primary cutaneous extranodal natural killer/T-cell lymphoma: A case report. J Dermatol 2024; 51:e137-e138. [PMID: 37997464 DOI: 10.1111/1346-8138.17043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 10/31/2023] [Accepted: 11/01/2023] [Indexed: 11/25/2023]
Affiliation(s)
- Risako Maeda
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Tomoyuki Minowa
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Junji Kato
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Kohei Horimoto
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Sayuri Sato
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Yoshihiko Hirohashi
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Toshihiko Torigoe
- Department of Pathology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Hisashi Uhara
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
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2
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18F-FDG PET/computed tomography may predict the outcome of newly diagnosed indolent non-Hodgkin lymphoma in patients managed with initial 'watch-and-wait' approach. Nucl Med Commun 2021; 41:1283-1290. [PMID: 32925828 DOI: 10.1097/mnm.0000000000001279] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVE The aim of this study was to investigate the role of F-fluorodeoxyglucose (F-FDG) PET/computed tomography (CT) in the outcome of non-Hodgkin lymphoma (NHL) in patients managed with initial 'watch-and-wait' treatment. METHODS Sixteen patients with newly diagnosed NHL treated with initial watchful waiting were retrospectively recruited. They had a baseline F-FDG PET/CT and at least one follow-up PET/CT. The standard uptake values (SUV), metabolic tumor volume (MTV) and total lesions glycolysis (TLG) of lymphoma were measured in PET/CT. They were followed up for at least 2 years or until disease progression. The endpoint was the time to initiation of lymphoma treatment (TLT). RESULTS Comparing the baseline and the follow-up PET/CT, four out of 16 patients showed spontaneous regression of lymphoma, three of the 16 patients had stable disease and the remaining nine of the 16 patients had progressive disease in the follow-up PET/CT. After a median follow-up of 32 months (range 14-90 months), 10/16 patients had progressive disease and chemotherapy was initiated. The median TLT was 21.0 months. In univariate analysis, MTV and TLG in baseline PET/CT were significant to predict TLT. Kaplan-Meier curves showed a statistical difference for TLT in the two groups of patients stratified by MTV or TLG at baseline (median TLT, 66.0 months vs. 12.0 months, P = 0.007). However, patients' age, Ann Arbor staging, International Prognostic Index and SUVmax were not significant. CONCLUSION A proportion of patients with NHL might experience spontaneous regression of lymphoma. F-FDG PET/CT turned out as a prognostic factor for TLT in patients with NHL under watchful waiting.
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Single-Cell Heterogeneity of Cutaneous T-Cell Lymphomas Revealed Using RNA-Seq Technologies. Cancers (Basel) 2020; 12:cancers12082129. [PMID: 32751918 PMCID: PMC7464763 DOI: 10.3390/cancers12082129] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 07/16/2020] [Accepted: 07/29/2020] [Indexed: 01/04/2023] Open
Abstract
Cutaneous T-cell lymphomas (CTCLs) represent a large, heterogeneous group of non-Hodgkin lymphomas that primarily affect the skin. Among multiple CTCL variants, the most prevalent types are mycosis fungoides (MF) and Sézary syndrome (SS). In the past decade, the molecular genetics of CTCL have been the target of intense study, increasing the knowledge of CTCL genomic alterations, discovering novel biomarkers, and potential targets for patient-specific therapy. However, the detailed pathogenesis of CTCL development still needs to be discovered. This review aims to summarize the novel insights into molecular heterogeneity of malignant cells using high-throughput technologies, such as RNA sequencing and single-cell RNA sequencing, which might be useful to identify tumour-specific molecular signatures and, therefore, offer guidance for therapy, diagnosis, and prognosis of CTCL.
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Ghazawi FM, Alghazawi N, Le M, Netchiporouk E, Glassman SJ, Sasseville D, Litvinov IV. Environmental and Other Extrinsic Risk Factors Contributing to the Pathogenesis of Cutaneous T Cell Lymphoma (CTCL). Front Oncol 2019; 9:300. [PMID: 31106143 PMCID: PMC6499168 DOI: 10.3389/fonc.2019.00300] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2019] [Accepted: 04/01/2019] [Indexed: 01/17/2023] Open
Abstract
The applications of disease cluster investigations in medicine have developed rather rapidly in recent decades. Analyzing the epidemiology of non-random aggregation of patients with a particular disease fostered identification of environmental and external exposures as disease triggers and promoters. Observation of patient clusters and their association with nearby exposures, such as Dr. John Snow's astute mapping analysis in the mid-1800's, which revealed proximity of cholera patients in London to a contaminated water pump infected with Vibrio cholerae, have paved the way for the field of epidemiology. This approach enabled the identification of triggers for many human diseases including infections and cancers. Cutaneous T-cell lymphomas (CTCL) represent a group of non-Hodgkin lymphomas that primarily affect the skin. The detailed pathogenesis by which CTCL develops remains largely unknown. Notably, non-random clustering of CTCL patients was reported in several areas worldwide and this rare malignancy was also described to affect multiple members of the same family. These observations indicate that external factors are possibly implicated in promoting CTCL lymphomagenesis. Here, we review the epidemiology of CTCL worldwide and the clinical characteristics of CTCL patients, as revealed by global epidemiological data. Further, we review the known risk factors including sex, age, race as well as environmental, infectious, iatrogenic and other exposures, that are implicated in CTCL lymphomagenesis and discuss conceivable mechanisms by which these factors may trigger this malignancy.
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Affiliation(s)
- Feras M Ghazawi
- Division of Dermatology, University of Ottawa, Ottawa, ON, Canada
| | - Nebras Alghazawi
- Division of Dermatology, McGill University, Montréal, QC, Canada
| | - Michelle Le
- Division of Dermatology, McGill University, Montréal, QC, Canada
| | | | | | - Denis Sasseville
- Division of Dermatology, McGill University, Montréal, QC, Canada
| | - Ivan V Litvinov
- Division of Dermatology, McGill University, Montréal, QC, Canada
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5
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Abstract
RATIONALE Hydroa vacciniforme (HV)-like T-cell lymphoma is a rare malignancy in childhood associated with Epstein-Barr virus infection. PATIENT CONCERNS A 6-year old girl presented with complaint of 3-year history of recurrent skin lesions, 3 months of fever accompanied by cough for 8 days. DIAGNOSES Skin biopsy revealed a HV-like lymphoma presentation and positive signals of EBER were detected by in situ hybridization. TCR-γ gene monoclonal rearrangement was present. A HV-like cutaneous T-cell lymphoma was diagnosed. INTERVENTIONS The girl was treated with cyclosporine and CHOP. OUTCOMES The girl's condition had been stable for 6 months. LESSONS Our case highlights the necessity for taking the HV-like lymphoma as a differential diagnosis especially when a patient manifests as recurrent skin lesions accompanied by systemic involvement.
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Affiliation(s)
- Jingyi Li
- Department of Pediatrics, West China Second University Hospital Key Laboratory of Birth Defects and Related Diseases of Women and Children, Ministry of Education Department of Dermatology, West China Hospital, Sichuan University, Chengdu, Sichuan, People's Republic of China
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6
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Haverkos BM, Gru AA, Geyer SM, Bingman AK, Hemminger JA, Mishra A, Wong HK, Pancholi P, Freud AG, Caligiuri MA, Baiocchi RA, Porcu P. Increased Levels of Plasma Epstein Barr Virus DNA Identify a Poor-Risk Subset of Patients With Advanced Stage Cutaneous T-Cell Lymphoma. CLINICAL LYMPHOMA MYELOMA & LEUKEMIA 2017; 16 Suppl:S181-S190.e4. [PMID: 27521316 DOI: 10.1016/j.clml.2016.02.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Accepted: 02/09/2016] [Indexed: 12/12/2022]
Abstract
INTRODUCTION Outcomes in advanced stage (AS) cutaneous T-cell lymphomas (CTCL) are poor but with great variability. Epstein-Barr virus (EBV) is associated with a subset of non-Hodgkin lymphomas. Frequency of plasma EBV-DNA (pEBVd) detection, concordance with EBV RNA (EBER) in tumor tissue, codetection of plasma cytomegalovirus DNA (pCMVd), and prognostic effect in AS CTCL are unknown. PATIENTS AND METHODS Patients (n = 46; 2006-2013) with AS CTCL (≥IIB) were retrospectively studied. pEBVd and pCMVd were longitudinally measured using quantitative real-time polymerase chain reaction. EBER in situ hybridization (ISH) was performed on tumor samples. Survival from time of diagnosis (ToD) and time of progression to AS was assessed. RESULTS Plasma EBV-DNA and pCMVd were detected in 37% (17 of 46) and 17% (8 of 46) of AS CTCL patients, respectively. pCMVd detection was significantly more frequent in pEBVd-positive (pEBVd(+)) than pEBVd(-) patients (35% vs. 7%; P = .038). Tumor tissue for EBER-ISH was available in 14 of 17 pEBVd(+) and 22 of 29 pEBVd(-) patients; 12 of 14 (85.7%) pEBVd(+) patients were EBER(+) versus 0 of 22 pEBVd(-) patients. Frequency of large cell transformation (LCT) tended to be greater in pEBVd(+) patients, but was not significant (10 of 14 pEBVd(+) vs. 10 of 23 pEBVd(-); P = .17). No notable differences in rates of increased levels of serum lactate dehydrogenase (LDH) were observed (17 of 17 pEBVd(+) vs. 27 of 29 pEBVd(-)). pEBVd detection was associated with significantly worse survival from ToD (P = .021) and time of progression to AS (P = .0098). CONCLUSION Detection of cell-free plasma EBV-DNA was highly concordant with the presence of EBERs in tumor tissue, predicted survival independent of LDH and LCT, and should be further studied as a biomarker in AS CTCL.
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MESH Headings
- Adult
- Aged
- Aged, 80 and over
- Antineoplastic Agents/administration & dosage
- Antineoplastic Agents/therapeutic use
- Antineoplastic Combined Chemotherapy Protocols/therapeutic use
- Biomarkers
- Biopsy
- DNA, Viral
- Epstein-Barr Virus Infections/complications
- Epstein-Barr Virus Infections/virology
- Female
- Follow-Up Studies
- Herpesvirus 4, Human/genetics
- Humans
- Lymphoma, T-Cell, Cutaneous/diagnosis
- Lymphoma, T-Cell, Cutaneous/etiology
- Lymphoma, T-Cell, Cutaneous/mortality
- Lymphoma, T-Cell, Cutaneous/therapy
- Male
- Middle Aged
- Neoplasm Staging
- Prognosis
- Retrospective Studies
- Skin/pathology
- Survival Analysis
- Treatment Outcome
- Viral Load
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Affiliation(s)
| | - Alejandro A Gru
- Department of Pathology, University of Virginia, Charlottesville, VA
| | - Susan M Geyer
- Department of Pediatrics Health Informatics Institute, University of South Florida, Tampa, FL
| | - Anissa K Bingman
- Center for Biostatistics, The Ohio State University, Columbus, OH
| | | | - Anjali Mishra
- The Comprehensive Cancer Center and The James Cancer Hospital and Solove Research Institute, The Ohio State University, Columbus, OH; Division of Dermatology, The Ohio State University, Columbus, OH
| | - Henry K Wong
- Department of Dermatology, University of Arkansas for Medical Sciences, College of Medicine, Little Rock, AR
| | - Preeti Pancholi
- Department of Pathology, The Ohio State University, Columbus, OH
| | - Aharon G Freud
- The Comprehensive Cancer Center and The James Cancer Hospital and Solove Research Institute, The Ohio State University, Columbus, OH
| | - Michael A Caligiuri
- The Comprehensive Cancer Center and The James Cancer Hospital and Solove Research Institute, The Ohio State University, Columbus, OH; Division of Hematology, The Ohio State University, Columbus, OH
| | - Robert A Baiocchi
- The Comprehensive Cancer Center and The James Cancer Hospital and Solove Research Institute, The Ohio State University, Columbus, OH; Division of Hematology, The Ohio State University, Columbus, OH
| | - Pierluigi Porcu
- The Comprehensive Cancer Center and The James Cancer Hospital and Solove Research Institute, The Ohio State University, Columbus, OH; Division of Hematology, The Ohio State University, Columbus, OH.
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Wu CC, Takahashi E, Asano N, Miyata-Takata T, Takata K, Furukawa K, Elsayed AA, Hu LM, Satou A, Kohno K, Kosugi H, Ohashi K, Kinoshita T, Nakamura S, Kato S. Primary cutaneous NK/T-cell lymphoma of nasal type: an age-related lymphoproliferative disease? Hum Pathol 2017; 68:61-68. [PMID: 28873353 DOI: 10.1016/j.humpath.2017.08.025] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Revised: 08/10/2017] [Accepted: 08/23/2017] [Indexed: 11/29/2022]
Abstract
Among extranodal NK/T-cell lymphoma of nasal type (NKTL), the extranasal variant (ENKTL) is known to have a worse prognosis with advanced clinical stage than the nasal variant of NKTL. However, detailed clinicopathological features of the localized extranasal disease have not been well documented in English literature. Here, we described the clinicopathological profiles of 14 patients with stage I ENKTL, including 7 in the skin, 5 in the gastrointestinal tract, and 2 in the central nervous system, highlighting the distinctiveness of the first. The 7 primary cutaneous (PCNKTL) cases were characterized by an older onset age (median, 76 versus 53 years, P=.012) and a more favorable clinical course (P=.041) compared with 17 patients with stages II-IV ENKTL that showed cutaneous involvement. The skin lesions in the PCNKTL group were distributed in the face or neck (n=4) and limbs (n=3) but not the trunk, which was most frequently affected (60%, P=.017) in the latter group. Furthermore, the stage I cutaneous disease showed a female predominance (male-female, 2:5 versus 7:0; P=.021) and a significantly more favorable survival compared with the noncutaneous stage I ENKTL (P=.037). These results suggest that PCNKTL constitute a distinct subgroup in the nasal-type lymphoma spectrum.
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Affiliation(s)
- Chun-Chieh Wu
- Department of Pathology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung, Taiwan 807; Department of Pathology and Laboratory Medicine, Nagoya University Hospital, Nagoya, Japan 466-8560
| | - Emiko Takahashi
- Department of Surgical Pathology, Aichi Medical University Hospital, Nagakute, Japan 480-1195
| | - Naoko Asano
- Department of Molecular Diagnostics, Nagano Prefectural Suzaka Hospital, Suzaka, Japan 382-0091
| | - Tomoko Miyata-Takata
- Department of Pathology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan 700-8558
| | - Katsuyoshi Takata
- Department of Pathology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan 700-8558; Centre for Lymphoid Cancer, BC Cancer Agency, Department of Pathology, British Columbia Cancer Research Centre, Vancouver, BC, V5Z 1L3 Canada
| | - Katsuya Furukawa
- Department of Hematology, Ogaki Municipal Hospital, Ogaki, Japan 503-8502
| | - Ahmed Ali Elsayed
- Department of Pathology and Laboratory Medicine, Nagoya University Hospital, Nagoya, Japan 466-8560; Department of Pathology, Faculty of Medicine, Mansoura University, Mansoura, Egypt 35516
| | - Lei-Ming Hu
- Department of Pathology and Laboratory Medicine, Nagoya University Hospital, Nagoya, Japan 466-8560; Department of Gastroenterology, Nagoya University Graduate School of Medicine, Nagoya, Japan 466-8560
| | - Akira Satou
- Department of Pathology and Laboratory Medicine, Nagoya University Hospital, Nagoya, Japan 466-8560; Department of Surgical Pathology, Aichi Medical University Hospital, Nagakute, Japan 480-1195
| | - Kei Kohno
- Department of Pathology and Laboratory Medicine, Nagoya University Hospital, Nagoya, Japan 466-8560
| | - Hiroshi Kosugi
- Department of Hematology, Ogaki Municipal Hospital, Ogaki, Japan 503-8502
| | - Kenichi Ohashi
- Department of Pathology, Yokohama City University Graduate School of Medicine, Yokohama, Japan 236-0016
| | - Tomohiro Kinoshita
- Department of Hematology and Cell Therapy, Aichi Cancer Center, Nagoya, Japan 464-8681
| | - Shigeo Nakamura
- Department of Pathology and Laboratory Medicine, Nagoya University Hospital, Nagoya, Japan 466-8560
| | - Seiichi Kato
- Department of Pathology and Laboratory Medicine, Nagoya University Hospital, Nagoya, Japan 466-8560; Department of Pathology and Molecular Diagnostics, Aichi Cancer Center Hospital, Nagoya, Japan 464-8681.
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8
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Yu SC. Comment on "Cutaneous nonmycotic T- and natural killer/T-cell lymphomas: diagnostic challenges and dilemmas". J Am Acad Dermatol 2014; 71:1003-4. [PMID: 25437962 DOI: 10.1016/j.jaad.2014.06.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Revised: 06/16/2014] [Accepted: 06/17/2014] [Indexed: 10/24/2022]
Affiliation(s)
- Shan-Chi Yu
- Department of Pathology, National Taiwan University Hospital, Taipei City, Taiwan.
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9
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Abstract
The cytotoxic T-cell and natural killer (NK)-cell lymphomas and related disorders are important but relatively rare lymphoid neoplasms that frequently are a challenge for practicing pathologists. This selective review, based on a meeting of the International Lymphoma Study Group, briefly reviews T-cell and NK-cell development and addresses questions related to the importance of precise cell lineage (αβ-type T cell, γδ T cell, or NK cell), the implications of Epstein-Barr virus infection, the significance of anatomic location including nodal disease, and the question of further categorization of enteropathy-associated T-cell lymphomas. Finally, developments subsequent to the 2008 World Health Organization Classification, including the recognition of indolent NK-cell and T-cell disorders of the gastrointestinal tract are presented.
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11
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12
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Abstract
The etiology of cutaneous T-cell lymphoma (CTCL) remains unknown, with potential infectious causes having been explored. This contribution evaluates the evidence suggesting an infectious etiology and pathogenesis of the disease, characterizes the relationships between various specific pathogens and CTCL, and discusses some of the difficulties in establishing a causal link between infectious agents and CTCL carcinogenesis. Researchers have evaluated CTCL specimens for evidence of infection with a variety of agents, including human T-lymphotropic virus, Epstein-Barr virus, human herpesvirus-8, and Staphylococcus aureus, although other pathogens also have been detected in CTCL. Although there is significant evidence implicating one or more infectious agents in CTCL, studies to date have not linked definitively any pathogen to disease development, and various studies have yielded conflicting results.
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Li Y, Chen XH, Tian XY, Li B, Li Z. Primary Cutaneous Hydroa Vacciniforme–Like Lymphoma With Indolent Clinical Course. Int J Surg Pathol 2012; 21:161-8. [PMID: 22807582 DOI: 10.1177/1066896912453200] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Primary cutaneous hydroa vacciniforme (HV)–like lymphoma is a rare, Epstein–Barr virus–associated cutaneous neoplasm characterized by photosensitive papulovesicular eruption and usually associated with poor prognosis. This report presents 2 cases of primary cutaneous HV-like lymphoma with unusual indolent clinical course and favorable prognosis during the follow-up periods of 2 and 3 years, respectively. Both patients presented with erythema, papulovesicles, scars, ulcerations, and edema on the face and extremities. Skin biopsies revealed epidermal vesicle with small- to medium-sized atypical lymphoid cells infiltrating in the dermis and subcutis. The lymphoid cells were strongly immunoreactive to CD8 and CD56. The Epstein–Barr virus genomes were also found in both skin biopsies. By genetic analysis, one of patients showed T-cell receptor-γ gene clonal rearrangement. The patients underwent glucocorticoid treatment and obtained remarkable clinical improvement with regression of skin lesions. No sign of recurrence and extracutaneous manifestation was found during the period of follow-up. A long-term follow-up is suggested to be performed to inspect the progression for this tumor.
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Affiliation(s)
- Yang Li
- The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Xiao-hong Chen
- The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | | | - Bin Li
- The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zhi Li
- The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
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Kawabe S, Ito Y, Gotoh K, Kojima S, Matsumoto K, Kinoshita T, Iwata S, Nishiyama Y, Kimura H. Application of flow cytometric in situ hybridization assay to Epstein-Barr virus-associated T/natural killer cell lymphoproliferative diseases. Cancer Sci 2012; 103:1481-8. [PMID: 22497716 DOI: 10.1111/j.1349-7006.2012.02305.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Revised: 04/06/2012] [Accepted: 04/09/2012] [Indexed: 12/12/2022] Open
Abstract
Epstein-Barr virus (EBV) infects various types of lymphocytes and is associated with not only B cell-origin lymphoma, but also T or natural killer cell lymphoproliferative diseases (T/NK LPD). Recently, we established a novel assay to identify EBV-infected cells using FISH. Using this assay, dual staining with antibodies to both surface antigens and an EBV-encoded small RNA (EBER) probe can be performed. In the present study, we applied this recently developed FISH assay to EBV-associated T/NK LPD to confirm its diagnostic utility. Using FISH, we prospectively analyzed peripheral blood from patients with suspected EBV-associated T/NK LPD. The results were compared with those obtained using immunobead sorting followed by quantitative PCR. In all, 26 patients were included study. Using FISH, 0.15-67.0% of peripheral blood lymphocytes were found to be positive for EBER. Dual staining was used to determine EBER-positive cell phenotypes in 23 of 26 subjects (88.5%). In five of seven patients with hydroa vacciniforme-like lymphoma (an EBV-positive cutaneous T cell lymphoma), EBER-positive cells were identified as CD3(+) CD4(-) CD8(-) TCRγδ(+) T cells. Furthermore, in a 25-year-old male patient with systemic EBV-positive T cell LPD, two lymphocyte lineages were positive for EBER: CD4(+) CD8(-) and CD4(-) CD8(+) T cells. Thus, we confirmed that our newly developed assay is useful for quantifying and characterizing EBV-infected lymphocytes in EBV-associated T/NK LPD and that it can be used not only to complement the pathological diagnosis, but also to clarify the pathogenesis and to expand the spectrum of EBV-associated diseases.
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Affiliation(s)
- Shinji Kawabe
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan
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15
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Fernandez-Flores A. Comments on cutaneous lymphomas: since the WHO-2008 classification to present. Am J Dermatopathol 2011; 34:274-84. [PMID: 22126841 DOI: 10.1097/dad.0b013e31821b8bfe] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The last classification of lymphomas of the World Health Organization in 2008 made a few changes from the preceding classification. Although useful, at the same time, it has posed new questions, concerns, and dilemmas which have been raised in the literature. The current report highlights some of these controversies, of each of these primary cutaneous entities, going through cutaneous mature T-cell and NK-cell neoplasms, mature B-cell neoplasms, precursor neoplasms, and other entities, which for several reasons do not fit in the previous categories. It also reviews some advances on many of these lymphomas published in the last 2 years.
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