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Demіr D, İhvan A, Aktaş E, Zemheri E, Zindanci İ. Correlation Between Clinical and Histological Features of Dermatopathic Lymphadenopathy: Analysis of 39 Lymph Nodes. Int J Surg Pathol 2024; 32:252-262. [PMID: 37151027 DOI: 10.1177/10668969231173381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Background. Dermatopathic lymphadenopathy is a well-defined histopathological entity with an underestimated prevalence in the general population. Objective. The present study was conducted to analyze the characteristics of histologically diagnosed cases of dermatopathic lymphadenopathy at our unit. We also aimed to investigate any association between the clinical features of the patients and the histological findings. Methods. A total of 39 lymph node samples from 39 patients diagnosed with dermatopathic lymphadenopathy were included in this prospective cohort study. Results. Thirty-four (87%) patients had a dermatological disorder. The presence of paracortical eosinophils were significantly higher in patients with dermatological disorders (P = .001), while the presence of dilated sinuses was significantly more common in patients without a dermatological disorder (P = .035). The presence of dilated sinuses and medullary histiocytes were significantly more common in patients with lower body surface area involvement of the disease compared to the ones with a higher body surface area (P = .003, P = .034; respectively). Conclusion. Most of the patients included in the study had one of a broad spectrum of undiagnosed dermatological disorders. The clinical significance of the relation between histological and clinical findings in dermatopathic lymphadenopathy remains to be explained. Dermatopathic lymphadenopathy should always be considered in differential diagnoses of patients with persistent lymph node enlargement even when absolute dermatological disorders are not present. Since various skin disorders may be the cause of lymphadenopathy, performing a full-body examination before lymph node excision might prevent unneccessary procedures.
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Affiliation(s)
- Damla Demіr
- Department of Dermatology and Venereology, İstinye University Faculty of Medicine, Istanbul, Turkey
| | - Ayşenur İhvan
- Department of Pathology, Health Science University Umraniye Training and Research Hospital, Istanbul, Turkey
| | - Ezgi Aktaş
- Department of Dermatology and Venereology, Okmeydanı Training and Research Hospital (Prof Dr Cemil Taşçıoğlu City Hospital), Istanbul, Turkey
| | - Ebru Zemheri
- Department of Pathology, Health Science University Umraniye Training and Research Hospital, Istanbul, Turkey
| | - İlkin Zindanci
- Department of Dermatology and Venereology, Health Science University Umraniye Training and Research Hospital, Istanbul, Turkey
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El Hussein S, Evans AG, Fang H, Wang W, Medeiros LJ. Unicentric Castleman Disease: Illustration of Its Morphologic Spectrum and Review of the Differential Diagnosis. Arch Pathol Lab Med 2024; 148:99-106. [PMID: 36920021 DOI: 10.5858/arpa.2022-0404-ra] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/19/2022] [Indexed: 03/16/2023]
Abstract
CONTEXT.— Unicentric Castleman disease (UCD) is a dynamic entity with a wide spectrum of morphologic findings. UCD can be further subdivided into hyaline-vascular and mixed/plasmacytic variants. Hyaline-vascular UCD has both follicular and interfollicular (stromal) changes, and occasionally these lesions show a skewed representation of either the follicular or stromal compartments. Plasmacytosis is usually minimal in the hyaline-vascular variant. The mixed/plasmacytic variant of UCD is composed of sheets of plasma cells often associated with a variable number of follicles with regressive changes. OBJECTIVE.— To illustrate the differential diagnosis of UCD, as it is quite broad and includes lymphomas, plasma cell neoplasms, stromal neoplasms such as follicular dendritic cell sarcoma and vascular neoplasms, immunoglobulin G4-related disease, infections, and other rare lesions. An additional objective is to enhance awareness of the morphologic features of UCD in excisional and in small core-needle biopsy specimens, the latter of which may inadvertently target follicle- or stroma-rich areas, causing diagnostic challenges. DATA SOURCES.— In this review, we provide readers a concise illustration of the morphologic spectrum of UCD that we have encountered in our practice and a brief discussion of entities in the differential diagnosis. CONCLUSIONS.— UCD exhibits a broad spectrum of morphologic changes, and awareness of these morphologic variations is key to avoid misdiagnosis.
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Affiliation(s)
- Siba El Hussein
- From the Department of Pathology, University of Rochester Medical Center, Rochester, New York (El Hussein, Evans)
| | - Andrew G Evans
- From the Department of Pathology, University of Rochester Medical Center, Rochester, New York (El Hussein, Evans)
| | - Hong Fang
- the Department of Hematopathology, University of Texas MD Anderson Cancer Center, Houston (Fang, Wang, Medeiros)
| | - Wei Wang
- the Department of Hematopathology, University of Texas MD Anderson Cancer Center, Houston (Fang, Wang, Medeiros)
| | - L Jeffrey Medeiros
- the Department of Hematopathology, University of Texas MD Anderson Cancer Center, Houston (Fang, Wang, Medeiros)
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3
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El Hussein S, Wang W. Plasmacytoid dendritic cells in the setting of myeloid neoplasms: Diagnostic guide to challenging pathologic presentations. Br J Haematol 2023; 200:545-555. [PMID: 36606610 DOI: 10.1111/bjh.18632] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2022] [Revised: 12/14/2022] [Accepted: 12/19/2022] [Indexed: 01/07/2023]
Abstract
In this article, we describe three broad pathologic presentations of plasmacytoid dendritic cells (pDCs) that may be encountered in clinical practice, in which an association between pDCs and myeloid neoplasms is identified: (1) myeloid neoplasms with mature pDC expansion, most commonly seen in chronic myelomonocytic leukaemia (CMML); (2) myeloid neoplasms with pDC differentiation, in which pDCs show a spectrum of maturation from early immature pDCs to mature forms, most commonly seen in acute myeloid leukaemia (AML); (3) myeloid neoplasms associated with blastic plasmacytoid dendritic cell neoplasm (BPDCN), either stemming from the same precursor or representing an independent clonal process. Additionally, we also discuss AML with pDC-like phenotype, in which myeloblasts show immunophenotypic features that may mimic those seen in pDCs. Using these presentations, we provide a diagnostic algorithm for appropriate pathologic classification, while attempting to clarify and homogenize nomenclatures pertaining to different biologic states of pDCs.
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Affiliation(s)
- Siba El Hussein
- Department of Pathology, University of Rochester Medical Center, Rochester, New York, USA
| | - Wei Wang
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
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4
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Chisholm KM, Bohling SD, Tsuchiya KD, Paulson VA. A Malignant Mimicker: Features of Kikuchi-Fujimoto Disease in the Pediatric Population. Pediatr Dev Pathol 2022; 25:538-547. [PMID: 35583198 DOI: 10.1177/10935266221103882] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Kikuchi-Fujimoto disease (KFD) is a rare, benign, and self-limited disease that presents with cervical lymphadenopathy and systemic symptoms. Histologic evaluation is often necessary to differentiate KFD from other entities. METHODS Electronic medical records and diagnostic material were reviewed for 14 children diagnosed with KFD and 6 children diagnosed with infectious mononucleosis (IM) from 2013-2021. Four cases of KFD were further characterized using targeted DNA-based next-generation sequencing. RESULTS Systemic symptoms were present in 86% (n = 12/14) of KFD patients, the most common being fever. Laboratory values worrisome for malignancy included cytopenia(s) (n = 9/12), elevated ESR and/or CRP (n = 9/12), elevated ferritin (n = 7/7), and elevated LDH (n = 7/10). Histologically, lymph nodes showed characteristic necrotic foci without neutrophils surrounded by MPO+ "crescentic" histiocytes. Immunoblasts and CD123+ plasmacytoid dendritic cells (pDCs) were also increased surrounding the necrosis. IM lymph nodes showed similar features when necrosis was present but increases in pDCs were patchy and rare neutrophils were seen in the necrotic foci. Molecular analysis of 4 KFD cases did not identify pathogenic variants. CONCLUSION While the signs/symptoms of KFD are worrisome, there are pathologic features that help differentiate it from potential mimics. We did not identify characteristic molecular features to aid in the work-up of these cases.
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Affiliation(s)
- Karen M Chisholm
- Department of Laboratories, 7274Seattle Children's Hospital, Seattle, WA, USA.,Department of Laboratory Medicine and Pathology, 7284University of Washington, Seattle, WA, USA
| | - Sandra D Bohling
- Department of Laboratories, 7274Seattle Children's Hospital, Seattle, WA, USA.,Department of Laboratory Medicine and Pathology, 7284University of Washington, Seattle, WA, USA
| | - Karen D Tsuchiya
- Department of Laboratory Medicine and Pathology, 7284University of Washington, Seattle, WA, USA
| | - Vera A Paulson
- Department of Laboratory Medicine and Pathology, 7284University of Washington, Seattle, WA, USA
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5
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Nelson ND, Meng W, Rosenfeld AM, Bullman S, Sekhar Pedamallu C, Nomburg JL, Wertheim GB, Paessler ME, Pinkus G, Hornick JL, Meyerson M, Luning Prak ET, Pillai V. Characterization of Plasmacytoid Dendritic Cells, Microbial Sequences, and Identification of a Candidate Public T-Cell Clone in Kikuchi-Fujimoto Disease. Pediatr Dev Pathol 2021; 24:193-205. [PMID: 33530869 DOI: 10.1177/1093526620987961] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
OBJECTIVES Kikuchi-Fujimoto disease (KFD) is a self-limited lymphadenitis of unclear etiology. We aimed to further characterize this disease in pediatric patients, including evaluation of the CD123 immunohistochemical (IHC) staining and investigation of potential immunologic and infectious causes. METHODS Seventeen KFD cases and 12 controls were retrospectively identified, and the histologic and clinical features were evaluated. CD123 IHC staining was quantified by digital image analysis. Next generation sequencing was employed for comparative microbial analysis via RNAseq (5 KFD cases) and to evaluate the immune repertoire (9 KFD cases). RESULTS In cases of lymphadenitis with necrosis, >0.85% CD123+ cells by IHC was found to be six times more likely in cases with a final diagnosis of KFD (sensitivity 75%, specificity 87.5%). RNAseq based comparative microbial analysis did not detect novel or known pathogen sequences in KFD. A shared complementarity determining region 3 (CDR3) sequence and use of the same T-cell receptor beta variable region family was identified in KFD LNs but not controls, and was not identified in available databases. CONCLUSIONS Digital quantification of CD123 IHC can distinguish KFD from other necrotizing lymphadenitides. The presence of a unique shared CDR3 sequence suggests that a shared antigen underlies KFD pathogenesis.
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Affiliation(s)
- Nya D Nelson
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.,Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Wenzhao Meng
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Aaron M Rosenfeld
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Susan Bullman
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, Massachusetts.,Department of Medical Oncology and Center for Cancer Genome Discovery, Dana-Farber Cancer Institute, Boston, Massachusetts.,Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Chandra Sekhar Pedamallu
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, Massachusetts.,Department of Medical Oncology and Center for Cancer Genome Discovery, Dana-Farber Cancer Institute, Boston, Massachusetts.,Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Jason L Nomburg
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, Massachusetts.,Department of Medical Oncology and Center for Cancer Genome Discovery, Dana-Farber Cancer Institute, Boston, Massachusetts.,Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Gerald B Wertheim
- Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Michele E Paessler
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.,Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Geraldine Pinkus
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Jason L Hornick
- Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Matthew Meyerson
- Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, Massachusetts.,Department of Medical Oncology and Center for Cancer Genome Discovery, Dana-Farber Cancer Institute, Boston, Massachusetts.,Department of Pathology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Eline T Luning Prak
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, Pennsylvania
| | - Vinodh Pillai
- Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, Pennsylvania.,Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
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6
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Sukswai N, Jung HR, Amr SS, Ng SB, Sheikh SS, Lyapichev K, El Hussein S, Loghavi S, Agbay RLMC, Miranda RN, Medeiros LJ, Khoury JD. Immunopathology of Kikuchi-Fujimoto disease: A reappraisal using novel immunohistochemistry markers. Histopathology 2020; 77:262-274. [PMID: 31854007 DOI: 10.1111/his.14050] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Revised: 12/10/2019] [Accepted: 12/16/2019] [Indexed: 12/11/2022]
Abstract
AIMS Kikuchi-Fujimoto disease (KFD) is a self-limited disease characterised by destruction of the lymph node parenchyma. Few studies have assessed the immunohistological features of KFD, and most employed limited antibody panels that lacked many of the novel immunohistochemistry markers currently available. METHODS AND RESULTS We used immunohistochemistry to reappraise the microanatomical distribution of plasmacytoid dendritic cells (pDCs), follicular helper T cells and cytotoxic T cells, B cells, follicular dendritic cell (FDC) meshworks, and histiocytes in lymph nodes involved by KFD. The study group consisted of 138 KFD patients (89 women; 64.5%) with a median age of 27 years (range, 3-50 years). Cervical lymph nodes were most commonly involved, in 108 (78.3%) patients. The numbers of pDCs were increased, predominantly around and within apoptotic areas and the paracortex, and tapering off within xanthomatous areas. pDCs formed sizeable tight clusters, most notably around apoptotic/necrotic areas. T cells consisted mostly of CD8-positive cells with predominant expression of T-cell receptor-β. There were notable increases in the numbers of CD8-positive T cells within lymphoid follicles, and their numbers correlated with alterations in FDC meshworks (P < 0.001). The number of follicular helper T cells was decreased within distorted FDC meshworks. CD21 highlighted frequent distortion of FDC meshworks, even in lymph node tissue that was distant from apoptotic/necrotic areas. Distorted FDC meshworks spanned all morphological patterns, and FDC meshwork characteristics (intact; distorted; remnant/nearly absent) correlated with morphological patterns (P < 0.01). CONCLUSIONS The immunohistological landscape of KFD is complex and characterised by increased numbers of pDCs that frequently cluster around apoptotic/necrotic foci, increased numbers of cytotoxic T cells, and substantial distortion of FDC meshworks.
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Affiliation(s)
- Narittee Sukswai
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TV, USA
- Department of Pathology, Chulalongkorn University, Bangkok, Thailand
| | - Hye Ra Jung
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TV, USA
- Department of Pathology, Keimyung University, Dongsan Medical Center, Seoul, South Korea
| | - Samir S Amr
- Department of Pathology, Johns Hopkins Aramco Healthcare, Dhahran, Saudi Arabia
| | - Siok Bian Ng
- Department of Pathology, National University Hospital, Singapore
| | - Salwa S Sheikh
- Department of Pathology, Johns Hopkins Aramco Healthcare, Dhahran, Saudi Arabia
| | - Kirill Lyapichev
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TV, USA
| | - Siba El Hussein
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TV, USA
| | - Sanam Loghavi
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TV, USA
| | - Rose Lou Marie C Agbay
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TV, USA
- Department of Pathology, The Medical City Hospital, Manila, Philippines
| | - Roberto N Miranda
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TV, USA
| | - L Jeffrey Medeiros
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TV, USA
| | - Joseph D Khoury
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TV, USA
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7
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Scott GD, Kumar J, Oak JS, Boyd SD, Raess PW, Gratzinger DA. Histology-Independent Signature Distinguishes Kikuchi-Fujimoto Disease/Systemic Lupus Erythematosus-Associated Lymphadenitis From Benign and Malignant Lymphadenopathies. Am J Clin Pathol 2020; 154:215-224. [PMID: 32367142 DOI: 10.1093/ajcp/aqaa036] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVES Kikuchi-Fujimoto disease (KFD) and systemic lupus erythematosus (SLE) are benign entities with histologic features that raise concern about malignancy and infection. We searched for a histology-independent KFD/SLE signature relying on only immunophenotype and basic clinical characteristics. METHODS A histology-independent KFD/SLE signature was generated using 975 excised lymph nodes with flow immunophenotyping, including 16 cases of KFD/SLE. This signature was then evaluated in 1,198 fine-needle aspiration (FNA) specimens. RESULTS The top flow cytometry discriminant for KFD/SLE was uniform CD38+ expression on CD19+ events. Immunohistochemistry demonstrated nodules of IgD+, IgM- B cells surrounding necrotizing and activated T-cell areas. A signature combining 6 flow cytometry criteria with age and sample site had a positive predictive value of 88% for KFD/SLE, which had a prevalence of 1.6%. All 4 signature-positive FNA cases with follow-up excision were KFD/SLE. At a second institution, 4 of 5 KFD/SLE cases passed the top discriminant. CONCLUSIONS A flow cytometry signature combined with age and biopsy site identifies KFD/SLE independent of histology, suggesting a shared immune composition and independently confirming that KFD/SLE represents a distinct entity. Unexpectedly, an IgD+CD38+ small B-cell population is a distinctive feature of KFD/SLE, suggesting a possible pathologic role for anergic/autoreactive B cells.
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Affiliation(s)
- Gregory D Scott
- Department of Pathology, Stanford University School of Medicine, Stanford, CA
| | - Jyoti Kumar
- Department of Pathology, Stanford University School of Medicine, Stanford, CA
| | - Jean S Oak
- Department of Pathology, Stanford University School of Medicine, Stanford, CA
| | - Scott D Boyd
- Department of Pathology, Stanford University School of Medicine, Stanford, CA
| | - Philipp W Raess
- Department of Pathology, Oregon Health and Science University, Portland
| | - Dita A Gratzinger
- Department of Pathology, Stanford University School of Medicine, Stanford, CA
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8
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Wojtyś M, Piekarska A, Kunc M, Ptaszyński K, Biernat W, Zaucha JM, Waloszczyk P, Lisowski P, Kubisa B, Grodzki T. Clinicopathological comparison and therapeutic approach to Castleman disease-a case-based review. J Thorac Dis 2019; 11:4859-4874. [PMID: 31903277 DOI: 10.21037/jtd.2019.10.73] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Castleman disease (CD) is a rare, B-cell lymphoproliferative disorder affecting lymph nodes and extranodal anatomical locations. Four types of clinical presentations can be distinguished after exclusion of mimics. The first division is into unicentric CD (UCD) and multicentric CD (MCD). MCD is classified further as HHV-8-negative (idiopathic), MCD associated with HHV-8 infection, and POEMS associated MCD. From the histological standpoint, UCD and MCD can be classified as hyaline-vascular (HV), plasma cell (PC), or mixed cellularity (MC) type, with a spectrum of histopathological manifestations. We present clinical and histopathological features and grading of 25 cases of CD classified according to CDCN histological criteria and according to this clinical algorithm, along with outcomes. Here we provide a fine-resolution description of the histological features of CD. We review and discuss the current diagnostic algorithm, grading system, and recently recommended treatment options. In the presented group of 25 patients with CD there were 14 women and 11 men in the age range 15-79 years. UCD was identified in 15 patients and it was most often located in mediastinum. MCD most frequently occurred as generalized lymphadenopathy. The most common type of CD was HV. All patients with UCD underwent complete surgical resection with a positive outcome. Patients with MCD had diagnostic partial surgical excision of the lesions, later followed by different types of treatment (corticosteroids, chemotherapy, radiotherapy, immunomodulatory agents) or 'watch and wait'. In four cases CD was associated with other malignancies (laryngeal cancer, small lymphocytic lymphoma, gallbladder cancer with hepatic metastases, primary squamous cell lung cancer). The accuracy of histopathological examination is essential and re-evaluation has to be performed in case of relapse or unexpected course of CD. Treatment tailored to fit the disease type and severity should follow the novel recommendations, including anti-IL-6 treatment in the case of MCD.
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Affiliation(s)
- Małgorzata Wojtyś
- Department of Thoracic Surgery and Transplantation Pomeranian Medical University, Sokołowskiego 11, 70-891 Szczecin, Poland
| | - Agnieszka Piekarska
- Department of Hematology and Transplantology, University Clinical Center, Medical University of Gdańsk, Smoluchowskiego 17, 80-214, Gdańsk, Poland
| | - Michał Kunc
- Department of Pathomorphology, University Clinical Center, Medical University of Gdańsk, Smoluchowskiego 17, 80-214, Gdańsk, Poland
| | - Konrad Ptaszyński
- Department of Pathology, Faculty of Medicine, University of Warmia and Mazury, Żołnierska 18, 10-561 Olsztyn, Poland
| | - Wojciech Biernat
- Department of Pathomorphology, University Clinical Center, Medical University of Gdańsk, Smoluchowskiego 17, 80-214, Gdańsk, Poland
| | - Jan Maciej Zaucha
- Department of Hematology and Transplantology, University Clinical Center, Medical University of Gdańsk, Smoluchowskiego 17, 80-214, Gdańsk, Poland
| | - Piotr Waloszczyk
- Zdunomed Private Health Care Institution, street: Energetyków 2, 70-656 Szczecin, Poland
| | - Piotr Lisowski
- Students' Scientific Circle of the Department of Thoracic Surgery and Transplantation, Pomeranian Medical University, Szczecin, Poland
| | - Bartosz Kubisa
- Department of Thoracic Surgery and Transplantation Pomeranian Medical University, Sokołowskiego 11, 70-891 Szczecin, Poland
| | - Tomasz Grodzki
- Department of Thoracic Surgery and Transplantation Pomeranian Medical University, Sokołowskiego 11, 70-891 Szczecin, Poland
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10
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Abstract
Benign and malignant proliferations of histiocytes and dendritic cells may be encountered in lymph nodes. Reactive histiocytic and dendritic cell infiltrates occur in response to diverse stimuli and in addition to causing lymphadenopathy, may be present unexpectedly in lymph nodes excised for other indications. This review summarizes the pathogenesis and histopathological features of the various non-neoplastic histiocytic and dendritic cell infiltrates that can occur in lymph nodes.
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Affiliation(s)
- Caoimhe Egan
- Hematopathology Section, Laboratory of Pathology, National Cancer Institute, Bethesda, MD, United States
| | - Elaine S Jaffe
- Hematopathology Section, Laboratory of Pathology, National Cancer Institute, Bethesda, MD, United States.
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11
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Kligerman SJ, Auerbach A, Franks TJ, Galvin JR. Castleman Disease of the Thorax: Clinical, Radiologic, and Pathologic Correlation: From the Radiologic Pathology Archives. Radiographics 2017; 36:1309-32. [PMID: 27618318 DOI: 10.1148/rg.2016160076] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Castleman disease is a complex lymphoproliferative disease pathologically divided into two subtypes, the hyaline vascular variant (HVV) and the plasma cell variant (PCV). The HVV is the most common, is thought to represent a benign neoplasm of lymph node stromal cells, and is treated with surgical resection. It is most commonly found in the mediastinum, where it classically appears as a unicentric, avidly enhancing mass at computed tomography (CT) and magnetic resonance imaging. This appearance can mimic other avidly enhancing mediastinal masses, and location, clinical history, laboratory data, and nuclear medicine single photon emission CT (SPECT) and positron emission tomography (PET) studies can help narrow the differential diagnosis. Multicentric Castleman disease (MCD), which in the majority of cases is composed of the PCV, is an aggressive lymphoproliferative disorder associated with human herpesvirus infection, interleukin 6 dysregulation, and other systemic disorders. While it can be difficult to differentiate MCD from lymphoma, the presence of avidly enhancing lymph nodes can suggest the diagnosis. The purpose of this article is to review the clinical, immunologic, and pathologic findings associated with both unicentric Castleman disease and MCD and discuss how the imaging findings correlate with the pathophysiology of the disease.
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Affiliation(s)
- Seth J Kligerman
- From the Department of Diagnostic Radiology and Nuclear Medicine, Division of Chest Imaging (S.J.K., J.R.G.), and Department of Internal Medicine, Division of Pulmonary/Critical Care (J.R.G.), University of Maryland School of Medicine, 22 S Greene St, Baltimore, MD 21201; Department of Hematopathology (A.A.) and Department of Pulmonary and Mediastinal Pathology (T.J.F.), the Joint Pathology Center, Department of Defense, Defense Health Agency, Silver Spring, Md; and Department of Chest Imaging, American Institute for Radiologic Pathology, Silver Spring, Md (J.R.G.)
| | - Aaron Auerbach
- From the Department of Diagnostic Radiology and Nuclear Medicine, Division of Chest Imaging (S.J.K., J.R.G.), and Department of Internal Medicine, Division of Pulmonary/Critical Care (J.R.G.), University of Maryland School of Medicine, 22 S Greene St, Baltimore, MD 21201; Department of Hematopathology (A.A.) and Department of Pulmonary and Mediastinal Pathology (T.J.F.), the Joint Pathology Center, Department of Defense, Defense Health Agency, Silver Spring, Md; and Department of Chest Imaging, American Institute for Radiologic Pathology, Silver Spring, Md (J.R.G.)
| | - Teri J Franks
- From the Department of Diagnostic Radiology and Nuclear Medicine, Division of Chest Imaging (S.J.K., J.R.G.), and Department of Internal Medicine, Division of Pulmonary/Critical Care (J.R.G.), University of Maryland School of Medicine, 22 S Greene St, Baltimore, MD 21201; Department of Hematopathology (A.A.) and Department of Pulmonary and Mediastinal Pathology (T.J.F.), the Joint Pathology Center, Department of Defense, Defense Health Agency, Silver Spring, Md; and Department of Chest Imaging, American Institute for Radiologic Pathology, Silver Spring, Md (J.R.G.)
| | - Jeffrey R Galvin
- From the Department of Diagnostic Radiology and Nuclear Medicine, Division of Chest Imaging (S.J.K., J.R.G.), and Department of Internal Medicine, Division of Pulmonary/Critical Care (J.R.G.), University of Maryland School of Medicine, 22 S Greene St, Baltimore, MD 21201; Department of Hematopathology (A.A.) and Department of Pulmonary and Mediastinal Pathology (T.J.F.), the Joint Pathology Center, Department of Defense, Defense Health Agency, Silver Spring, Md; and Department of Chest Imaging, American Institute for Radiologic Pathology, Silver Spring, Md (J.R.G.)
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12
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Millet A, Martin KR, Bonnefoy F, Saas P, Mocek J, Alkan M, Terrier B, Kerstein A, Tamassia N, Satyanarayanan SK, Ariel A, Ribeil JA, Guillevin L, Cassatella MA, Mueller A, Thieblemont N, Lamprecht P, Mouthon L, Perruche S, Witko-Sarsat V. Proteinase 3 on apoptotic cells disrupts immune silencing in autoimmune vasculitis. J Clin Invest 2015; 125:4107-21. [PMID: 26436651 DOI: 10.1172/jci78182] [Citation(s) in RCA: 72] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2014] [Accepted: 08/27/2015] [Indexed: 12/12/2022] Open
Abstract
Granulomatosis with polyangiitis (GPA) is a systemic necrotizing vasculitis that is associated with granulomatous inflammation and the presence of anti-neutrophil cytoplasmic antibodies (ANCAs) directed against proteinase 3 (PR3). We previously determined that PR3 on the surface of apoptotic neutrophils interferes with induction of antiinflammatory mechanisms following phagocytosis of these cells by macrophages. Here, we demonstrate that enzymatically active membrane-associated PR3 on apoptotic cells triggered secretion of inflammatory cytokines, including granulocyte CSF (G-CSF) and chemokines. This response required the IL-1R1/MyD88 signaling pathway and was dependent on the synthesis of NO, as macrophages from animals lacking these pathways did not exhibit a PR3-associated proinflammatory response. The PR3-induced microenvironment facilitated recruitment of inflammatory cells, such as macrophages, plasmacytoid DCs (pDCs), and neutrophils, which were observed in close proximity within granulomatous lesions in the lungs of GPA patients. In different murine models of apoptotic cell injection, the PR3-induced microenvironment instructed pDC-driven Th9/Th2 cell generation. Concomitant injection of anti-PR3 ANCAs with PR3-expressing apoptotic cells induced a Th17 response, revealing a GPA-specific mechanism of immune polarization. Accordingly, circulating CD4+ T cells from GPA patients had a skewed distribution of Th9/Th2/Th17. These results reveal that PR3 disrupts immune silencing associated with clearance of apoptotic neutrophils and provide insight into how PR3 and PR3-targeting ANCAs promote GPA pathophysiology.
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Reichard KK. Blastic Plasmacytoid Dendritic Cell Neoplasm: How do You Distinguish It from Acute Myeloid Leukemia? Surg Pathol Clin 2013; 6:743-765. [PMID: 26839196 DOI: 10.1016/j.path.2013.08.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
BPDCN is a recently elucidated clinicopathologic entity. This disease typically involves the skin, with 30% to 40% of patients showing an additional concurrent leukemic component. Although BPDCN often exhibits cytologic features akin to acute lymphoblastic leukemia, the main differential diagnostic challenge, in the skin and in the bone marrow, is distinction from AML, in particular AML with monocytic differentiation.
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Affiliation(s)
- Kaaren K Reichard
- Division of Hematopathology, Mayo Clinic, 200 1st Street Southwest, Hilton Building 8th Floor, Rochester, MN 55902, USA.
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