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Parkhi M, Chatterjee D, Kashyap D, Aggarwal A, Radotra B. Primary Rosai-Dorfman disease of the central nervous system: A clinical, histological, and molecular appraisal. Neuropathology 2024; 44:366-375. [PMID: 38548480 DOI: 10.1111/neup.12972] [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] [Received: 10/28/2023] [Revised: 03/01/2024] [Accepted: 03/07/2024] [Indexed: 10/03/2024]
Abstract
Rosai-Dorfman disease (RDD) is characterized by clonal proliferation of S-100 positive histiocytes and variable emperipolesis. It commonly affects cervical lymph nodes. Central nervous system (CNS) involvement is extremely rare. We attempted to evaluate the Cyclin D1 expression and frequency of KRAS and BRAF mutations in the RDD involving the CNS. All patients with histopathologically diagnosed RDD involving CNS were recruited from 2011 to 2022. All cases were subjected to immunohistochemistry for CD68, CD163, S100, CD1a, GFAP, CD207, EMA, ALK, BRAFV600E, IgG4, IgG, and CyclinD1. The real-time polymerase chain reaction (RT-PCR) for hotspot mutation analysis of KRAS (exons 2, 3, and 4) and BRAF (V600E) was conducted on formalin-fixed paraffin-embedded tissue using a commercial kit (EntroGen). A total of seven cases were included. The median age was 31 years, with six men and one woman. It showed spinal cord (n = 4) and intracranial (n = 3) involvement. Histologically, all cases showed histiocyte-rich inflammation with evidence of emperipolesis. These histiocytes were positive for S100, CD68, CD163, and Cyclin D1, whereas negative for CD1a, CD207, and EMA. BRAF V600E was expressed in a single case. None of the control cases (demyelination and infarction) with histiocytic infiltrate showed Cyclin D1 expression. Four RDD cases showed increased IgG4-positive plasma cells (>10/HPF) and IgG4/IgG ratio (>40%). BRAF V600E mutation was detected in one case (14.28%), while none showed KRAS mutation. RDD involving CNS is extremely rare and diagnostically challenging. Nuclear Cyclin D1 expression along with S-100 positivity in the tumor cells is a strong diagnostic clue. BRAF and KRAS mutations are rare in CNS RDD.
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Affiliation(s)
- Mayur Parkhi
- Department of Histopathology, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Debajyoti Chatterjee
- Department of Histopathology, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Dharambir Kashyap
- Department of Histopathology, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Ashish Aggarwal
- Department of Neurosurgery, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
| | - Bishan Radotra
- Department of Histopathology, Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh, India
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2
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Narayanan A, Rosado F, Vaughn A, Ryan M. Langerhans Cell Histiocytosis of the Nasal Mucosa. JAMA Otolaryngol Head Neck Surg 2024; 150:831-832. [PMID: 39023905 DOI: 10.1001/jamaoto.2024.1908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2024]
Abstract
This case report describes a female patient in her early 40s with left-sided cervical lymphadenopathy, facial swelling, nasal congestion, and a left nasal mass.
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Affiliation(s)
- Ajay Narayanan
- Department of Otolaryngology, Head and Neck Surgery, The University of Texas Southwestern Medical Center, Dallas
| | - Flavia Rosado
- Department of Pathology, The University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Andrew Vaughn
- Lake Cumberland Regional Hospital, Somerset, Kentucky
| | - Matthew Ryan
- Department of Otolaryngology, Head and Neck Surgery, The University of Texas Southwestern Medical Center, Dallas
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3
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Detiger SE, Paridaens D, Kemps PG, van Halteren AGS, van Hagen PM, van Laar JAM, Verdijk RM. Histological evidence of MAPK pathway activation across subtypes of adult orbital xanthogranulomatous disease irrespective of the detection of oncogenic mutations. Clin Immunol 2024; 265:110299. [PMID: 38936524 DOI: 10.1016/j.clim.2024.110299] [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] [Received: 05/22/2024] [Revised: 06/19/2024] [Accepted: 06/21/2024] [Indexed: 06/29/2024]
Abstract
Adult orbital xanthogranulomatous disease (AOXGD) is a spectrum of histiocytoses with four subtypes. Mitogen-activated protein kinase (MAPK) pathway mutations have been detected in various histiocytic neoplasms, little is known about this in AOXGD. Targeted regions of cancer- and histiocytosis-related genes were analyzed and immunohistochemical staining of phosphorylated ERK (pERK), cyclin D1 and PU.1 was performed in 28 AOXGD and 10 control xanthelasma biopsies to assess MAPK pathway activation. Mutations were detected in 7/28 (25%) patients. Positive staining for pERK and/or cyclin D1 was found across all subtypes in 17/27 (63%) patients of whom 12/17 (71%) did not harbour a mutation. Xanthelasma tissue stained negative for pERK and cyclin D1. Relapse occurred in 5/7 (71%) patients with a MAPK pathway mutation compared to 8/21 (38%) patients in whom no mutation could be detected. Molecular analysis and evaluation for systemic disease is warranted to identify patients at risk of recurrent xanthomatous disease.
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Affiliation(s)
- S E Detiger
- The Rotterdam Eye Hospital, Rotterdam, the Netherlands
| | - D Paridaens
- The Rotterdam Eye Hospital, Department of Oculoplastic, Orbital and Lacrimal Surgery, Rotterdam, the Netherlands; Department of Ophthalmology, Erasmus MC University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - P G Kemps
- Department of Pathology, Leiden University Medical Center, Leiden, the Netherlands
| | - A G S van Halteren
- Department of Internal Medicine, section Clinical Immunology & Allergology, Erasmus MC University Medical Center Rotterdam, Rotterdam, the Netherlands; Princess Máxima Center for Pediatric Oncology, Utrecht, the Netherlands; On behalf of the HOVON Histiocytic and Lymphocytic Diseases Working Group
| | - P M van Hagen
- Department of Internal Medicine, section Clinical Immunology & Allergology, Erasmus MC University Medical Center Rotterdam, Rotterdam, the Netherlands; Department of Immunology, Erasmus MC University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - J A M van Laar
- Department of Internal Medicine, section Clinical Immunology & Allergology, Erasmus MC University Medical Center Rotterdam, Rotterdam, the Netherlands; Department of Immunology, Erasmus MC University Medical Center Rotterdam, Rotterdam, the Netherlands; On behalf of the HOVON Histiocytic and Lymphocytic Diseases Working Group
| | - R M Verdijk
- The Rotterdam Eye Hospital, Rotterdam, the Netherlands; Department of Pathology, Leiden University Medical Center, Leiden, the Netherlands; Department of Pathology, section Ophthalmic Pathology, Erasmus MC University Medical Center Rotterdam, Rotterdam, the Netherlands.
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4
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Bahabri A, Abla O. Advances in our understanding of genetic markers and targeted therapies for pediatric LCH. Expert Rev Hematol 2024; 17:223-231. [PMID: 38721670 DOI: 10.1080/17474086.2024.2353772] [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] [Received: 12/13/2023] [Accepted: 05/07/2024] [Indexed: 05/12/2024]
Abstract
INTRODUCTION Langerhans cell histiocytosis (LCH) is a rare myeloid neoplasm, encompassing a diverse clinical spectrum ranging from localized bone or skin lesions to a multisystemic life-threatening condition. Over the past decade, there has been an expansion in understanding the molecular biology of LCH, which translated into innovative targeted therapeutic approaches. AREAS COVERED In this article, we will review the molecular alterations observed in pediatric LCH and the relationship between these molecular changes and the clinical phenotype, as well as targeted therapies in LCH. EXPERT OPINION Mitogen-activated protein kinase (MAPK) pathway mutation is a hallmark of LCH and is identified in 80% of the cases. Notably, BRAFV600E mutation is seen in ~50-60% of the cases, ~30% has other MAPK pathway mutations, while 15-20% have no detected mutations. While the first line therapeutic approach is vinblastine and prednisone, targeted therapies - specifically BRAF/MEK inhibitors - emerged as a promising second-line salvage strategy, particularly when a mutation is identified. Most patients respond to BRAF/MEK inhibitors but at least 75% reactivate after stopping, however, most patients respond again when restarting inhibitors.
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Affiliation(s)
- Aban Bahabri
- Division of Haematology-Oncology, Department of Paediatrics, The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
- Division of Haematology-Oncology, Department of Pediatrics, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | - Oussama Abla
- Division of Haematology-Oncology, Department of Paediatrics, The Hospital for Sick Children, University of Toronto, Toronto, ON, Canada
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Zhao J, Li Y, Zhang Y, Mei X, Liu W, Li Y. Isolated Langerhans cell histiocytosis in the stomach of adults: four-case series and literature review. J Hematop 2024; 17:63-69. [PMID: 38652382 PMCID: PMC11127803 DOI: 10.1007/s12308-024-00584-9] [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] [Received: 12/30/2023] [Accepted: 04/04/2024] [Indexed: 04/25/2024] Open
Abstract
Langerhans cell histiocytosis (LCH) of the stomach is rare. Moreover, it is usually found in pediatric patients with systemic diseases and may be associated with a poor prognosis. Solitary gastric LCH in adults is extremely rare and is often misdiagnosed or missed. The aim of our study was to review cases of gastric LCH and explore the characteristics of the disease further. A retrospective study of all patients admitted with solitary gastric LCH was conducted between 2013 and 2023. Clinical manifestations, endoscopic and pathological features, immunophenotypes, and molecular changes were collected from medical records. We examined four cases (one female, three males) of gastric LCH. The affected patients were between 33 and 70 years of age. Endoscopically, three patients presented with a solitary polyp or elevated lesions, whereas one patient showed no abnormalities. Under a microscope, all cases showed abnormal proliferation of histiocytoid cells infiltrating in a nested or sheet-like fashion. The tumor cells were medium-sized, with a slightly eosinophilic cytoplasm, irregular or renal-shaped nuclei, folded nuclear membranes, visible nuclear grooves, and the infiltration of inflammatory cells in the background. Immunohistochemically, all lesions expressed CD1a, S-100, langerin, and cyclinD1. One case showed diffuse BRAF V600E positivity. Follow-up data were available for all patients from 4 to 36 months, and all patients were alive without recurrence or progress at the time of manuscript preparation. Combined with previously reported data, solitary adult gastric LCH is more common in male patients, most of whom are asymptomatic or exhibit only mild gastrointestinal symptoms, with a good prognosis. Endoscopy often reveals solitary polyps or protruding lesions; rare cases may progress to multifocal/multisystem lesions, necessitating long-term close follow-up.
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Affiliation(s)
- Jianmin Zhao
- Department of Pathology, Beijing Friendship Hospital, Capital Medical University, No. 95, Yong'an Road, Xicheng District, Beijing, China
| | - Yanlei Li
- Department of Pathology, Tianjin Medical University, Tianjin, China
| | - Yanlin Zhang
- Department of Pathology, Beijing Friendship Hospital, Capital Medical University, No. 95, Yong'an Road, Xicheng District, Beijing, China.
| | - Xue Mei
- Department of Pathology, Beijing Friendship Hospital, Capital Medical University, No. 95, Yong'an Road, Xicheng District, Beijing, China
| | - Wei Liu
- Department of Pathology, Beijing Friendship Hospital, Capital Medical University, No. 95, Yong'an Road, Xicheng District, Beijing, China
| | - Yinghong Li
- Department of Pathology, Beijing Friendship Hospital, Capital Medical University, No. 95, Yong'an Road, Xicheng District, Beijing, China
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Yoon SO. Pathologic characteristics of histiocytic and dendritic cell neoplasms. Blood Res 2024; 59:18. [PMID: 38713245 PMCID: PMC11076448 DOI: 10.1007/s44313-024-00015-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Accepted: 04/05/2024] [Indexed: 05/08/2024] Open
Abstract
Histiocytic and dendritic cell neoplasms comprise diverse tumors originating from the mononuclear phagocytic system, which includes monocytes, macrophages, and dendritic cells. The 5th edition of the World Health Organization (WHO) classification updating the categorization of these tumors, reflecting a deeper understanding of their pathogenesis.In this updated classification system, tumors are categorized as Langerhans cell and other dendritic cell neoplasms, histiocyte/macrophage neoplasms, and plasmacytoid dendritic cell neoplasms. Follicular dendritic cell neoplasms are classified as mesenchymal dendritic cell neoplasms within the stroma-derived neoplasms of lymphoid tissues.Each subtype of histiocytic and dendritic cell neoplasms exhibits distinct morphological characteristics. They also show a characteristic immunophenotypic profile marked by various markers such as CD1a, CD207/langerin, S100, CD68, CD163, CD4, CD123, CD21, CD23, CD35, and ALK, and hematolymphoid markers such as CD45 and CD43. In situ hybridization for EBV-encoded small RNA (EBER) identifies a particular subtype. Immunoprofiling plays a critical role in determining the cell of origin and identifying the specific subtype of tumors. There are frequent genomic alterations in these neoplasms, especially in the mitogen-activated protein kinase pathway, including BRAF (notably BRAF V600E), MAP2K1, KRAS, and NRAS mutations, and ALK gene translocation.This review aims to offer a comprehensive and updated overview of histiocytic and dendritic cell neoplasms, focusing on their ontogeny, morphological aspects, immunophenotypic profiles, and molecular genetics. This comprehensive approach is essential for accurately differentiating and classifying neoplasms according to the updated WHO classification.
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Affiliation(s)
- Sun Och Yoon
- Department of Pathology, Yonsei University College of Medicine, Severance Hospital, 50-1 Yonsei-Ro, Seodaemun-Gu, Seoul, 03722, South Korea.
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Auerbach A, Aguilera NS. The changing landscape of pediatric histiocytoses: Birth, life, and transdifferentiation of pediatric histiocytes. Semin Diagn Pathol 2023; 40:420-428. [PMID: 37258365 DOI: 10.1053/j.semdp.2023.05.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 05/19/2023] [Indexed: 06/02/2023]
Abstract
Histiocytic neoplasms in the children are very rare, and histiocytoses can occur in the perinatal period. The presumed origins and presentation of specific histiocytoses in the pediatric age group are described. Common and newly described histiocytoses are presented including Langerhans cell histiocytosis, Rosai-Dorfman disease, histiocytic sarcoma, ALK positive histiocytosis, and hemophagocytic lymphohistiocytosis. Molecular findings common to pediatric histiocytoses are also discussed.
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Affiliation(s)
- Aaron Auerbach
- Joint Pathology Center, Silver Spring, MD, United States of America
| | - Nadine S Aguilera
- University of Virginia Health System, Charlottesville, VA, United States of America.
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Naor S, Adam E, Schiby G, Gratzinger D. A personalized approach to lymphoproliferations in patients with inborn errors of immunity. Semin Diagn Pathol 2023; 40:408-419. [PMID: 37479638 DOI: 10.1053/j.semdp.2023.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 07/01/2023] [Accepted: 07/10/2023] [Indexed: 07/23/2023]
Abstract
Biopsies from patients with inborn error of immunity (IEI) may pose a diagnostic challenge due to the abnormal anatomy of their lymphoid organs and the tendency for the development of lymphoproliferations in various organs, some of which may lead to the wrong impression of malignant lymphoma which may prompt aggressive unnecessary treatment. In this article we will review typical histologic findings in various IEI's described in the literature and discuss the appropriate approach to the diagnosis of lymphoproliferations in these patients by presenting illustrative cases.
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Affiliation(s)
- Shachar Naor
- Institute of Pathology, Sheba Medical Center, Ramat Gan, Israel.
| | - Etai Adam
- Division of Pediatric Hematology and Oncology, Sheba Medical Center, The Edmond and Lily Safra Children's Hospital, Ramat Gan, Israel
| | - Ginette Schiby
- Institute of Pathology, Sheba Medical Center, Ramat Gan, Israel
| | - Dita Gratzinger
- Department of Pathology, Stanford University, Stanford, CA, United States
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Frigola G, Bühler M, Marginet M, Enjuanes A, Nadeu F, Papaleo N, Salido M, Haralambieva E, Alamo J, Garcia-Bragado F, Álvarez R, Ramos R, Aldecoa I, Campo E, Colomo L, Balagué O. MYC and TP53 Alterations but Not MAPK Pathway Mutations Are Common Oncogenic Mechanisms in Follicular Dendritic Cell Sarcomas. Arch Pathol Lab Med 2023; 147:896-906. [PMID: 36355424 DOI: 10.5858/arpa.2021-0517-oa] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/23/2022] [Indexed: 07/28/2023]
Abstract
CONTEXT.— Despite their stromal origin, follicular dendritic cells (FDCs) share many functions with hematopoietic system cells. FDC neoplasms are currently classified by the World Health Organization along with those of a histiocytic nature. However, the molecular alterations driving oncogenesis in FDC sarcomas (FDCSs) are beginning to be unveiled and do not seem to concur with those described in histiocytic neoplasms, namely MAPK pathway activation. OBJECTIVE.— To identify molecular alterations driving tumorigenesis in FDCS. DESIGN.— We investigated the role of MYC and TP53 in FDC-derived tumor oncogenesis and assessed comprehensively the status of the MAPK pathway in 16 FDCSs, 6 inflammatory pseudotumor (IPT)-like FDCSs, and 8 IPTs. RESULTS.— MYC structural alterations (both amplifications and rearrangements) were identified in 5 of 14 FDCSs (35.7%), all associated with MYC overexpression. TP53 mutations were identified in 4 of 14 FDCSs (28.6%), all of which displayed intense and diffuse p53 expression. None of these alterations were identified in any IPT-like FDCSs or in IPT cases. No MAPK pathway gene alterations were identified in any of the cases studied. CONCLUSIONS.— The presence of MYC and TP53 alterations and the lack of association with Epstein-Barr virus segregate classical FDCS from IPT-like FDCS, pointing at different oncogenic mechanisms in both entities. Our results suggest a possible oncogenic role of MYC and TP53 alterations in FDCS. The absence of MAPK pathway alterations confirms the lack of a significant role of this pathway in the oncogenesis of FDC-derived neoplasms.
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Affiliation(s)
- Gerard Frigola
- From the Department of Pathology, Hospital Clínic of Barcelona, Barcelona, Spain (Frigola, Bühler, Marginet, Alamo, Aldecoa, Campo, Balagué)
- The Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain (Frigola, Bühler, Enjuanes, Nadeu, Campo, Balagué)
| | - Marco Bühler
- From the Department of Pathology, Hospital Clínic of Barcelona, Barcelona, Spain (Frigola, Bühler, Marginet, Alamo, Aldecoa, Campo, Balagué)
- The Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain (Frigola, Bühler, Enjuanes, Nadeu, Campo, Balagué)
- The Department of Pathology, University Hospital Zürich, Zürich, Switzerland (Bühler, Haralambieva)
| | - Marta Marginet
- From the Department of Pathology, Hospital Clínic of Barcelona, Barcelona, Spain (Frigola, Bühler, Marginet, Alamo, Aldecoa, Campo, Balagué)
| | - Anna Enjuanes
- The Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain (Frigola, Bühler, Enjuanes, Nadeu, Campo, Balagué)
| | - Ferran Nadeu
- The Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain (Frigola, Bühler, Enjuanes, Nadeu, Campo, Balagué)
- The Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain (Nadeu, Campo, Balagué)
| | - Natalia Papaleo
- The Department of Pathology, Parc Taulí Hospital Universitari, Sabadell, Spain (Papaleo)
- The Department of Pathology, Hospital del Mar, Barcelona, Spain (Papaleo, Salido, Colomo)
- The Department of Diagnostic Fundamentals, University Pompeu Fabra, Barcelona, Spain (Papaleo, Colomo)
| | - Marta Salido
- The Department of Pathology, Hospital del Mar, Barcelona, Spain (Papaleo, Salido, Colomo)
| | - Eugenia Haralambieva
- The Department of Pathology, University Hospital Zürich, Zürich, Switzerland (Bühler, Haralambieva)
| | - José Alamo
- From the Department of Pathology, Hospital Clínic of Barcelona, Barcelona, Spain (Frigola, Bühler, Marginet, Alamo, Aldecoa, Campo, Balagué)
| | - Federico Garcia-Bragado
- The Department of Pathology, Complejo Hospitalario de Navarra, Pamplona, Spain (Garcia-Bragado)
| | - Ramiro Álvarez
- The Department of Pathology, Hospital Universitario Miguel Servet, Zaragoza, Spain (Álvarez)
| | - Rafael Ramos
- The Department of Pathology, Hospital Universitari Son Espases, Palma de Mallorca, Spain (Ramos)
| | - Iban Aldecoa
- From the Department of Pathology, Hospital Clínic of Barcelona, Barcelona, Spain (Frigola, Bühler, Marginet, Alamo, Aldecoa, Campo, Balagué)
| | - Elías Campo
- From the Department of Pathology, Hospital Clínic of Barcelona, Barcelona, Spain (Frigola, Bühler, Marginet, Alamo, Aldecoa, Campo, Balagué)
- The Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain (Frigola, Bühler, Enjuanes, Nadeu, Campo, Balagué)
- The Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain (Nadeu, Campo, Balagué)
- The Department of Clinical Fundamentals, University of Barcelona, Barcelona, Spain (Campo, Balagué)
| | - Lluis Colomo
- The Department of Pathology, Hospital del Mar, Barcelona, Spain (Papaleo, Salido, Colomo)
- The Department of Diagnostic Fundamentals, University Pompeu Fabra, Barcelona, Spain (Papaleo, Colomo)
| | - Olga Balagué
- From the Department of Pathology, Hospital Clínic of Barcelona, Barcelona, Spain (Frigola, Bühler, Marginet, Alamo, Aldecoa, Campo, Balagué)
- The Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain (Frigola, Bühler, Enjuanes, Nadeu, Campo, Balagué)
- The Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Madrid, Spain (Nadeu, Campo, Balagué)
- The Department of Clinical Fundamentals, University of Barcelona, Barcelona, Spain (Campo, Balagué)
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Ozkaya N, Lee I, Johnson TS, Jaffe ES. CSF1R/CD115 is a Helpful Marker for the Distinction of Florid Dermatopathic Lymphadenopathy From Langerhans Cell Neoplasms. Am J Surg Pathol 2023; 47:844-846. [PMID: 37132506 PMCID: PMC10330053 DOI: 10.1097/pas.0000000000002047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/04/2023]
Affiliation(s)
- Neval Ozkaya
- Laboratory of Pathology, Center for Cancer Research, NCI, Bethesda, MD
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11
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Vargas JC, Cardozo C, Stanzione R, Fiore L, D'Almeida Costa F, Fonseca Abreu R, Hamerschlak N, Perini G. Incidental Diagnosis of Oligosymptomatic Bilateral Perirenal Erdheim-Chester Disease during Emergency Investigation for COVID-19 Infection. Case Rep Hematol 2023; 2023:4683188. [PMID: 37303482 PMCID: PMC10257540 DOI: 10.1155/2023/4683188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2022] [Revised: 04/20/2023] [Accepted: 05/18/2023] [Indexed: 06/13/2023] Open
Abstract
Erdheim-Chester disease (ECD), a rare form of non-Langerhans histiocytosis, is a multisystem disorder. The case reported here refers to a 49-year-old man presenting at the emergency room with respiratory symptoms. While undergoing diagnostic tests for COVID-19 infection, tomography revealed asymptomatic bilateral perirenal tumors, while renal function remained unaltered. ECD was suggested as an incidental diagnosis and confirmed by core needle biopsy. This report provides a brief description of the clinical, laboratory, and imaging findings in this case of ECD. This diagnosis, albeit rare, should be taken into consideration in the context of incidental findings of abdominal tumors to ensure that treatment, when required, is instituted early.
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Affiliation(s)
- Juliano Cordova Vargas
- Hematology Department, Americas Oncologia e Hematologia, São Paulo, SP, Brazil
- Hematology Department, Hospital Samaritano Higienópolis, São Paulo, SP, Brazil
- Hematology Department, Hospital Metropolitano da Lapa, São Paulo, SP, Brazil
- School of Medicine, Centro Universitário São Camilo, São Paulo, SP, Brazil
| | - Caio Cardozo
- School of Medicine, Centro Universitário São Camilo, São Paulo, SP, Brazil
| | - Renata Stanzione
- Hematology Department, Hospital Israelita Albert Einstein, São Paulo, SP, Brazil
| | - Lucas Fiore
- Radiology Department, Hospital Metropolitano da Lapa, São Paulo, SP, Brazil
- Radiology Department, Hospital Samaritano Higienópolis, São Paulo, SP, Brazil
| | | | | | - Nelson Hamerschlak
- Hematology Department, Americas Oncologia e Hematologia, São Paulo, SP, Brazil
- Hematology Department, Hospital Israelita Albert Einstein, São Paulo, SP, Brazil
| | - Guilherme Perini
- Hematology Department, Americas Oncologia e Hematologia, São Paulo, SP, Brazil
- Hematology Department, Hospital Israelita Albert Einstein, São Paulo, SP, Brazil
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12
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Griffin GK, Booth CAG, Togami K, Chung SS, Ssozi D, Verga JA, Bouyssou JM, Lee YS, Shanmugam V, Hornick JL, LeBoeuf NR, Morgan EA, Bernstein BE, Hovestadt V, van Galen P, Lane AA. Ultraviolet radiation shapes dendritic cell leukaemia transformation in the skin. Nature 2023; 618:834-841. [PMID: 37286599 PMCID: PMC10284703 DOI: 10.1038/s41586-023-06156-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 05/02/2023] [Indexed: 06/09/2023]
Abstract
Tumours most often arise from progression of precursor clones within a single anatomical niche. In the bone marrow, clonal progenitors can undergo malignant transformation to acute leukaemia, or differentiate into immune cells that contribute to disease pathology in peripheral tissues1-4. Outside the marrow, these clones are potentially exposed to a variety of tissue-specific mutational processes, although the consequences of this are unclear. Here we investigate the development of blastic plasmacytoid dendritic cell neoplasm (BPDCN)-an unusual form of acute leukaemia that often presents with malignant cells isolated to the skin5. Using tumour phylogenomics and single-cell transcriptomics with genotyping, we find that BPDCN arises from clonal (premalignant) haematopoietic precursors in the bone marrow. We observe that BPDCN skin tumours first develop at sun-exposed anatomical sites and are distinguished by clonally expanded mutations induced by ultraviolet (UV) radiation. A reconstruction of tumour phylogenies reveals that UV damage can precede the acquisition of alterations associated with malignant transformation, implicating sun exposure of plasmacytoid dendritic cells or committed precursors during BPDCN pathogenesis. Functionally, we find that loss-of-function mutations in Tet2, the most common premalignant alteration in BPDCN, confer resistance to UV-induced cell death in plasmacytoid, but not conventional, dendritic cells, suggesting a context-dependent tumour-suppressive role for TET2. These findings demonstrate how tissue-specific environmental exposures at distant anatomical sites can shape the evolution of premalignant clones to disseminated cancer.
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Affiliation(s)
- Gabriel K Griffin
- Department of Pathology, Dana-Farber Cancer Institute, Boston, MA, USA.
- Broad Institute of MIT and Harvard, Cambridge, MA, USA.
- Department of Pathology, Brigham and Women's Hospital, Boston, MA, USA.
| | | | - Katsuhiro Togami
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Sun Sook Chung
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Daniel Ssozi
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Division of Hematology, Brigham and Women's Hospital, Boston, MA, USA
| | - Julia A Verga
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Juliette M Bouyssou
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Yoke Seng Lee
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Division of Hematology, Brigham and Women's Hospital, Boston, MA, USA
| | - Vignesh Shanmugam
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Department of Pathology, Brigham and Women's Hospital, Boston, MA, USA
| | - Jason L Hornick
- Department of Pathology, Brigham and Women's Hospital, Boston, MA, USA
| | - Nicole R LeBoeuf
- Department of Dermatology, Center for Cutaneous Oncology, Dana-Farber Cancer Institute and Brigham and Women's Hospital, Boston, MA, USA
| | | | - Bradley E Bernstein
- Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA
- Department of Cell Biology, Harvard Medical School, Boston, MA, USA
- Ludwig Center at Harvard, Harvard Medical School, Boston, MA, USA
| | - Volker Hovestadt
- Broad Institute of MIT and Harvard, Cambridge, MA, USA.
- Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, MA, USA.
- Division of Hematology/Oncology, Boston Children's Hospital, Boston, MA, USA.
| | - Peter van Galen
- Broad Institute of MIT and Harvard, Cambridge, MA, USA.
- Division of Hematology, Brigham and Women's Hospital, Boston, MA, USA.
- Ludwig Center at Harvard, Harvard Medical School, Boston, MA, USA.
| | - Andrew A Lane
- Broad Institute of MIT and Harvard, Cambridge, MA, USA.
- Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA.
- Ludwig Center at Harvard, Harvard Medical School, Boston, MA, USA.
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Saggini A, Cerroni L, Ortins-Pina A, Kraft S. Expression of Cyclin D1 in Cutaneous Xanthogranuloma and Solitary Reticulohistiocytoma. Am J Dermatopathol 2023; 45:208-210. [PMID: 36730793 DOI: 10.1097/dad.0000000000002186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Andrea Saggini
- Center for Dermatopathology, Freiburg Im Breisgau, Germany
| | - Lorenzo Cerroni
- Research Unit Dermatopathology, Department of Dermatology, Medical University of Graz, Austria
| | | | - Stefan Kraft
- Center for Dermatopathology, Freiburg Im Breisgau, Germany
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14
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Mi B, Wu D, Fan Y, Thong BKS, Chen Y, Wang X, Wang C. Thyroid Langerhans cell histiocytosis concurrent with papillary thyroid carcinoma: A case report and literature review. Front Med (Lausanne) 2023; 9:1105152. [PMID: 36743683 PMCID: PMC9892196 DOI: 10.3389/fmed.2022.1105152] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2022] [Accepted: 12/30/2022] [Indexed: 01/20/2023] Open
Abstract
Langerhans cell histiocytosis (LCH) is a clonal neoplasm of myeloid dendritic cells, rarely involving the thyroid gland. Papillary thyroid carcinoma (PTC) is the most common histological subtype of thyroid cancer. We report a rare case of a 34-year-old Chinese woman who has LCH with PTC and cervical lymph node metastasis of LCH, with a review of the literature. The patient has thyroid nodules and cervical lymph node enlargement detected by neck ultrasound during physical examination. Fine needle aspiration cytology (FNAC) showed PTC with Hashimoto's thyroiditis and BRAF V600E mutation after thyroidectomy and lymph node dissection. Histopathological examination suggests that LCH was concurrent with classical PTC, accompanied by LCH cervical lymph node metastasis. No BRAF, HRAS, and TERT promoter mutations were detected in LCH metastatic lesions. The patient is in stable clinical condition currently.
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Affiliation(s)
- Bin Mi
- Department of Pathology, Pingyi County People’s Hospital, Linyi, China
| | - Di Wu
- Department of Pathology, Xuzhou Central Hospital, Xuzhou, China
| | - Yue Fan
- Department of Pathology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | | | - Yudong Chen
- Department of Ultrasound, Ruijin Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
| | - Xue Wang
- Department of Pathology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,*Correspondence: Xue Wang,
| | - Chaofu Wang
- Department of Pathology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China,Chaofu Wang,
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15
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Skin Biopsy in Pediatric Oncology/Hematopoietic Stem Cell Transplantation Patients. Am J Dermatopathol 2022; 44:728-733. [PMID: 35925552 DOI: 10.1097/dad.0000000000002200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
ABSTRACT The aim of this study was to review the dermatopathological findings in skin biopsy specimens from pediatric oncology and hematopoietic stem cell transplantation patients over a 20-year period. Three hundred fifty-two skin biopsies from 240 patients were reviewed, and the findings were grouped into 6 categories: index neoplasms, nonindex neoplasms, infections, graft-versus-host disease, other treatment complications, and others. Among the index neoplasms identified on skin biopsy, the most common conditions were Langerhans cell histiocytosis (14 patients) and melanoma (7 patients), with other hematological malignancies and an array of soft-tissue tumors accounting for the bulk of the remainder. Neoplastic conditions common in general dermatopathological practice such as basal cell carcinoma and squamous cell carcinoma were uncommon, each being identified in only 1 patient younger than the age of 18, although basal cell carcinomas developing subsequently in young adult life were identified in 7 patients. Infections were common, with infectious agents or viral cytopathic effects (not including human papillomavirus) identified in 34 biopsies. A significant proportion (74%) represented invasive fungal infections, which are of very significant clinical importance. Biopsies performed for a clinical suspicion of graft-versus-host seldom showed histological features to suggest an alternative diagnosis, with only a single case suggesting a diagnosis of toxic erythema of chemotherapy identified.
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16
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MUM1/IRF4 is Highly Expressed in Dermatopathic Lymphadenopathy: Potential Utility in Diagnosis and Differential Diagnosis. Am J Surg Pathol 2022; 46:1514-1523. [PMID: 35877199 DOI: 10.1097/pas.0000000000001935] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Dermatopathic lymphadenopathy (DL) is a distinctive type of lymph node hyperplasia that typically occurs in the setting of chronic dermatologic diseases. DL generally self-resolves following disappearance of the underlying skin stimulus and does not require any specific therapy. We recently observed multiple myeloma oncogene 1/interferon regulatory factor 4 (MUM1/IRF4) expression in a case of DL using immunohistochemical methods. The goal of this study was to systematically assess DL cases for MUM1/IRF4 expression and to survey other histiocytic and Langerhans cell lesions. We particularly focused on Langerhans cell histiocytosis (LCH) because the differential diagnosis of DL versus LCH in lymph nodes can be challenging. We identified high expression of MUM1/IRF4 in all 22 cases of DL tested. Specifically, MUM1/IRF4+ dendritic cells comprised 50% to 90% (median, 80%) of all dendritic cells in the paracortex of dermatopathic lymph nodes, always showing moderate or strong intensity. Among 10 DL cases stained for MUM1/IRF4 and langerin/CD207 using dual immunohistochemistry, MUM1/IRF4+ and langerin+ Langerhans cells represented 5% to 60% (median, 30%) of paracortical dendritic cells. MUM1/IRF4 was also positive in reactive Langerhans cells in skin biopsy specimens of all cases of spongiotic dermatitis (n=10) and normal skin (n=15), and was negative in all cases of LCH (n=24), Rosai-Dorfman disease (n=10), follicular dendritic cell sarcoma (n=5) and histiocytic sarcoma (n=4). In aggregate, our findings support the utility of MUM1/IRF4 to highlight the dendritic cells of DL and to distinguish DL from other histiocytic and Langerhans cells lesions.
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17
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Erdheim-Chester disease collides with myelodysplastic neoplasm in bone marrow. Ann Diagn Pathol 2022; 58:151928. [DOI: 10.1016/j.anndiagpath.2022.151928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 02/02/2022] [Accepted: 02/11/2022] [Indexed: 11/22/2022]
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18
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Milman T, Eiger-Moscovich M, Henry RK, Ida CM, Ruben M, Shields CL, Lally SE, Penne RB, Stefanyszyn MA, Bilyk JR, Rapuano CJ, Rabinowitz M, Eagle RC. Cyclin D1 expression and molecular genetic findings in periocular histiocytoses and neoplasms of macrophage-dendritic cell lineage. Am J Ophthalmol 2022; 242:36-51. [PMID: 35594918 DOI: 10.1016/j.ajo.2022.05.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 05/06/2022] [Accepted: 05/13/2022] [Indexed: 11/19/2022]
Abstract
PURPOSE Frequent activating mutations in the mitogen-activated protein kinase (MAPK) pathway genes have been identified in histiocytoses. MAPK signaling consistently upregulates Cyclin D1. The goal of this study was to determine whether Cyclin D1 expression by immunohistochemistry is a useful diagnostic marker for periocular histiocytoses and to further characterize their genetic basis. DESIGN Retrospective observational case series. METHODS Pathology records were searched for all patients with histiocytoses diagnosed between 1995-2020. Eleven histiocyte-rich inflammatory lesions and 10 xanthelasma served as controls. Cyclin D1 immunohistochemistry was performed on all tissues. A subset of histiocytoses was evaluated by next-generation sequencing (NGS) and droplet digital PCR (ddPCR). RESULTS There were 36 patients, 15 (42%) males and 21 (58%) females, with histiocytoses: 9 (25%) juvenile xanthogranuloma, 8 (22%) adult-onset asthma and periocular xanthogranuloma, 7 (19%) Langerhans cell histiocytosis, 5 (14%) Rosai-Dorfman disease, 5 (14%) xanthogranuloma not otherwise specified, 1 (3%) Erdheim-Chester disease, and 1 (3%) histiocytic sarcoma. Moderate-to-strong nuclear Cyclin D1 expression was present in ≥50% of lesional cells in histiocytoses (23/36, 64%), significantly more when compared to histiocyte-rich inflammatory lesions (0/11, 0%, P<.001) and xanthelasma (0/10, 0%, P<.001). Cyclin D1 was expressed in <10% of lesional cells in all 11 histiocyte-rich inflammatory lesions (P<.001) and all 10 xanthelasma lesions (P<.001). MAPK pathway gene mutations were detected in 12 of 14 (86%) histiocytoses successfully assayed by NGS and/or ddPCR. CONCLUSIONS Our study confirms that the Cyclin D1 immunohistochemical stain is a useful diagnostic marker for periocular histiocytoses, correlating with underlying mutations in MAPK pathway genes.
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Affiliation(s)
- Tatyana Milman
- From the Department of Pathology (T.M., M.E.-M., R.C.E.), Wills Eye Hospital, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania; Department of Ophthalmology (T.M., C.L.S., S.E.L., R.B.P., M.A.S., J.R.B., C.J.R., M.Ra., R.C.E.), Wills Eye Hospital, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania.
| | - Maya Eiger-Moscovich
- From the Department of Pathology (T.M., M.E.-M., R.C.E.), Wills Eye Hospital, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania; Maya Eiger-Moscovich is currently practicing at Department of Ophthalmology, Hadassah Medical Center, Jerusalem, Israel. Meghan Ruben is currently practicing at Department of Ophthalmology, Penn State Health Milton S. Hershey Medical Center, Hershey, PA, USA
| | - Roger K Henry
- Institute of Ophthalmology and Visual Science, Rutgers-New Jersey Medical School at Rutgers University (R.K.H.), Newark, New Jersey
| | - Cristiane M Ida
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Mayo Clinic College of Medicine and Science (C.M.I.), Rochester, Minnesota; USA
| | - Megan Ruben
- Ocular Oncology Service (M.Ru., C.L.S., S.E.L., R.B.P.), Wills Eye Hospital, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Carol L Shields
- Department of Ophthalmology (T.M., C.L.S., S.E.L., R.B.P., M.A.S., J.R.B., C.J.R., M.Ra., R.C.E.), Wills Eye Hospital, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania; Ocular Oncology Service (M.Ru., C.L.S., S.E.L., R.B.P.), Wills Eye Hospital, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Sara E Lally
- Department of Ophthalmology (T.M., C.L.S., S.E.L., R.B.P., M.A.S., J.R.B., C.J.R., M.Ra., R.C.E.), Wills Eye Hospital, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania; Ocular Oncology Service (M.Ru., C.L.S., S.E.L., R.B.P.), Wills Eye Hospital, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Robert B Penne
- Department of Ophthalmology (T.M., C.L.S., S.E.L., R.B.P., M.A.S., J.R.B., C.J.R., M.Ra., R.C.E.), Wills Eye Hospital, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania; Ocular Oncology Service (M.Ru., C.L.S., S.E.L., R.B.P.), Wills Eye Hospital, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Mary A Stefanyszyn
- Department of Ophthalmology (T.M., C.L.S., S.E.L., R.B.P., M.A.S., J.R.B., C.J.R., M.Ra., R.C.E.), Wills Eye Hospital, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania; Department of Oculoplastic and Orbital Surgery (M.A.S., J.R.B., M.Ra.), Wills Eye Hospital, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Jurij R Bilyk
- Department of Ophthalmology (T.M., C.L.S., S.E.L., R.B.P., M.A.S., J.R.B., C.J.R., M.Ra., R.C.E.), Wills Eye Hospital, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania; Department of Oculoplastic and Orbital Surgery (M.A.S., J.R.B., M.Ra.), Wills Eye Hospital, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Christopher J Rapuano
- Department of Ophthalmology (T.M., C.L.S., S.E.L., R.B.P., M.A.S., J.R.B., C.J.R., M.Ra., R.C.E.), Wills Eye Hospital, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania; Cornea Service (C.J.R.), Wills Eye Hospital, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Michael Rabinowitz
- Department of Ophthalmology (T.M., C.L.S., S.E.L., R.B.P., M.A.S., J.R.B., C.J.R., M.Ra., R.C.E.), Wills Eye Hospital, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania; Department of Oculoplastic and Orbital Surgery (M.A.S., J.R.B., M.Ra.), Wills Eye Hospital, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Ralph C Eagle
- From the Department of Pathology (T.M., M.E.-M., R.C.E.), Wills Eye Hospital, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania; Department of Ophthalmology (T.M., C.L.S., S.E.L., R.B.P., M.A.S., J.R.B., C.J.R., M.Ra., R.C.E.), Wills Eye Hospital, Sidney Kimmel Medical College at Thomas Jefferson University, Philadelphia, Pennsylvania
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19
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Goyal G, Tazi A, Go RS, Rech KL, Picarsic JL, Vassallo R, Young JR, Cox CW, Van Laar J, Hermiston ML, Cao XX, Makras P, Kaltsas G, Haroche J, Collin M, McClain KL, Diamond EL, Girschikofsky M. International expert consensus recommendations for the diagnosis and treatment of Langerhans cell histiocytosis in adults. Blood 2022; 139:2601-2621. [PMID: 35271698 PMCID: PMC11022927 DOI: 10.1182/blood.2021014343] [Citation(s) in RCA: 79] [Impact Index Per Article: 39.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 02/24/2022] [Indexed: 11/20/2022] Open
Abstract
Langerhans cell histiocytosis (LCH) can affect children and adults with a wide variety of clinical manifestations, including unifocal, single-system multifocal, single-system pulmonary (smoking-associated), or multisystem disease. The existing paradigms in the management of LCH in adults are mostly derived from the pediatric literature. Over the last decade, the discovery of clonality and MAPK-ERK pathway mutations in most cases led to the recognition of LCH as a hematopoietic neoplasm, opening the doors for treatment with targeted therapies. These advances have necessitated an update of the existing recommendations for the diagnosis and treatment of LCH in adults. This document presents consensus recommendations that resulted from the discussions at the annual Histiocyte Society meeting in 2019, encompassing clinical features, classification, diagnostic criteria, treatment algorithm, and response assessment for adults with LCH. The recommendations favor the use of 18F-Fluorodeoxyglucose positron emission tomography-based imaging for staging and response assessment in the majority of cases. Most adults with unifocal disease may be cured by local therapies, while the first-line treatment for single-system pulmonary LCH remains smoking cessation. Among patients not amenable or unresponsive to these treatments and/or have multifocal and multisystem disease, systemic treatments are recommended. Preferred systemic treatments in adults with LCH include cladribine or cytarabine, with the emerging role of targeted (BRAF and MEK inhibitor) therapies. Despite documented responses to treatments, many patients struggle with a high symptom burden from pain, fatigue, and mood disorders that should be acknowledged and managed appropriately.
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Affiliation(s)
- Gaurav Goyal
- Division of Hematology-Oncology, University of Alabama at Birmingham, Birmingham, AL
| | - Abdellatif Tazi
- Université de Paris, INSERM UMR 976, Saint Louis Research Institute, Paris, France
- French National Reference Center for Histiocytoses, Department of Pulmonology, Saint-Louis Teaching Hospital, Assistance Publique-Hôpiaux de Paris, Paris, France
| | | | - Karen L. Rech
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN
| | - Jennifer L. Picarsic
- Division of Pathology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
| | | | | | | | - Jan Van Laar
- Department of Internal Medicine
- Department of Immunology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Michelle L. Hermiston
- Division of Pediatric Hematology-Oncology, University of California, San Francisco, San Francisco, CA
| | - Xin-Xin Cao
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Polyzois Makras
- LCH Adult Clinic
- Department of Endocrinology and Diabetes, 251 Hellenic Air Force and VA General Hospital, Athens, Greece
| | - Gregory Kaltsas
- 1st Propaedeutic Department of Internal Medicine, National and Kapodistrian University of Athens, Greece
| | - Julien Haroche
- Service de médecine interne 2, Centre de Référence des Histiocytoses, Hôpital Pitié-Salpêtrière, Assistance Publique des Hôpitaux de Paris (APHP), Sorbonne Université, Paris, France
| | - Matthew Collin
- Newcastle University and Newcastle Upon Tyne Hospitals, Newcastle Upon Tyne, United Kingdom
| | - Kenneth L. McClain
- Texas Children's Cancer and Hematology Centers, Department of Pediatrics, Baylor College of Medicine, Houston, TX
| | - Eli L. Diamond
- Department of Neurology, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Michael Girschikofsky
- Internal Medicine I (Hemostasis, Hematology and Stem, Cell Transplantation and Medical Oncology), Ordensklinikum Linz Elisabethinen, Linz, Austria
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20
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Garces S, Medeiros LJ, Marques-Piubelli ML, Coelho Siqueira SA, Miranda RN, Cuglievan B, Sriganeshan V, Medina AM, Garces JC, Saluja K, Bhattacharjee MB, Khoury JD, Li S, Xu J, Jelloul FZ, Thakral B, Cameron Yin C. Cyclin D1 expression in Rosai-Dorfman disease: A near constant finding that is not invariably associated with MAPK/ERK pathway activation. Hum Pathol 2022; 121:36-45. [PMID: 34995673 DOI: 10.1016/j.humpath.2021.12.013] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 12/23/2021] [Accepted: 12/30/2021] [Indexed: 12/26/2022]
Abstract
Activating mutations in the MAPK/ERK pathway have been shown in nearly half of cases of Rosai-Dorfman disease (RDD). Cyclin D1, a key cell cycle regulator, constitutes a major downstream target of the MAPK/ERK pathway. In this study, we aim to further understand the pathogenesis of RDD by assessing the lesional histiocytes for cyclin D1, p-ERK, Ki-67 and BCL2 by immunohistochemistry We assessed 35 samples of RDD and a control group of histiocyte-rich reactive lesions. Cyclin D1 was expressed in about 90% of cases of RDD. Cyclin D1 was positive in 25-95% (median, 85%) of lesional histiocytes, was moderately/strongly expressed in 97% of cyclin D1-positive cases, and was significantly higher than in control specimens. p-ERK was positive in 16 of 30 (53%) cases of RDD and was negative in all controls. Whereas all p-ERK-positive RDD cases had concurrent cyclin D1 expression, over a third of cyclin D1-positive cases were negative for p-ERK. Ki-67 was low in RDD (median, 3%). BCL-2 was positive in lesional histiocytes in nine of 10 RDD cases assessed and was negative Overall, these findings point to unexpected, potential roles of these molecules in the pathogenesis of RDD. Overexpression of cyclin D1 in the absence of ERK phosphorylation in a subset of RDD cases opens the possibility of oncogenic mechanisms bypassing ERK, and supports the notion that cyclin D1 overexpression in RDD is multifactorial. Moreover, the observed lack of correlation between cyclin D1 with Ki-67 proliferative index suggests that prosurvival actions of cyclin D1 are, at least in part, cell-cycle independent. Finally, expression of BCL-2 and the low Ki-67 index suggest that RDD might be driven by anti-apoptotic rather than pro-proliferative oncogenic mechanisms.
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Affiliation(s)
| | | | - Mario Luiz Marques-Piubelli
- Department of Hematopathology; Department of Pathology, University of São Paulo Medical School Hospital, São Paulo, Brazil
| | | | | | - Branko Cuglievan
- Division of Pediatric Oncology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | | | - Ana Maria Medina
- Department of Pathology, Mount Sinai Medical Center, Miami, FL, USA
| | - Juan Carlos Garces
- Department of Pathology, Instituto Oncológico Nacional Dr. Juan Tanca Marengo, Guayaquil, Ecuador
| | - Karan Saluja
- Department of Pathology, The University of Texas Health Science Center, Houston, TX, USA
| | | | | | | | - Jie Xu
- Department of Hematopathology
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21
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Fraitag S, Emile J. Cutaneous histiocytoses in children. Histopathology 2021; 80:196-215. [DOI: 10.1111/his.14569] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Revised: 09/13/2021] [Accepted: 09/17/2021] [Indexed: 12/17/2022]
Affiliation(s)
- Sylvie Fraitag
- Paediatric Dermatopathology Unit Department of Pathology Hôpital Necker‐Enfants Malades AP‐HP ParisFrance
| | - Jean‐Francois Emile
- Department of Pathology Ambroise Paré Hospital AP‐HP Boulogne France
- EA4340‐BECCOH Versailles SQY University Boulogne France
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22
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Abstract
ABSTRACT Mitogen-activated protein kinase (MAPK)/extracellular signal-regulated kinase pathway activation has recently been found to be associated with almost all Langerhans cell histiocytosis cases. In BRAF V600E mutation-positive cases, this activation is seen as a downstream activation. In addition, cyclin D1 is a downstream target of the MAPK pathway. Recent studies have argued in favor of using cyclin D1 as a potential neoplastic marker to differentiate Langerhans cell histiocytosis from other reactive Langerhans cell proliferations in the skin and lymph nodes. Therefore, we chose to study the immunohistochemical expression of cyclin D1 in cutaneous xanthogranuloma (XG) cases. Fifteen XG cases were retrieved and stained for cyclin D1, BRAF (v-raf murine sarcoma viral oncogene homolog B1), CD1a, and langerin (CD207). Twelve cases showed strong and diffuse nuclear positivity for cyclin D1, both in the XG cells and in the multinucleated osteoclast-like giant cells. Three cases showed focal weak nuclear staining for cyclin D1. All 15 cases showed negative immunoreactivity for BRAF, CD1a, and CD207. Although limited by small sample size, we conclude that most cases of cutaneous XG should show at least weak nuclear staining with cyclin D1. The histogenesis of XG is still largely unknown, and the finding of cyclin D1 positivity in a majority of cases may indicate a role for the MAPK/extracellular signal-regulated kinase pathway in cutaneous XG.
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23
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Rech KL, He R. Challenges in the Histopathologic Diagnosis of Histiocytic Neoplasms. J Natl Compr Canc Netw 2021; 19:1305-1311. [PMID: 34781270 DOI: 10.6004/jnccn.2021.7098] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 09/28/2021] [Indexed: 11/17/2022]
Abstract
Histiocytic neoplasms, including Langerhans cell histiocytosis (LCH), Erdheim-Chester disease (ECD), and Rosai-Dorfman disease (RDD), present a diagnostic challenge due to nonspecific fibroinflammatory infiltrates and a diverse clinical presentation. The pathologist can play a key role in classification of these disorders through multidisciplinary collaboration and correlation of pathologic features with clinical and radiologic findings. The histopathologic differential diagnosis is broad, requiring knowledge of the possible diagnoses at each specific anatomic site, and a careful assessment to exclude other inflammatory and neoplastic disorders. An immunohistochemistry panel including CD163, CD1a, langerin, S100, Factor XIIIa, OCT2, and BRAF V600E can provide definitive diagnosis in LCH and RDD, whereas ECD requires classic clinical features as well as confirmation of an activating MAPK pathway mutation by genetic studies.
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Affiliation(s)
- Karen L Rech
- Division of Hematopathology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
| | - Rong He
- Division of Hematopathology, Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota
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24
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Go RS, Jacobsen E, Baiocchi R, Buhtoiarov I, Butler EB, Campbell PK, Coulter DW, Diamond E, Flagg A, Goodman AM, Goyal G, Gratzinger D, Hendrie PC, Higman M, Hogarty MD, Janku F, Karmali R, Morgan D, Raldow AC, Stefanovic A, Tantravahi SK, Walkovich K, Zhang L, Bergman MA, Darlow SD. Histiocytic Neoplasms, Version 2.2021, NCCN Clinical Practice Guidelines in Oncology. J Natl Compr Canc Netw 2021; 19:1277-1303. [PMID: 34781268 DOI: 10.6004/jnccn.2021.0053] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Histiocytic neoplasms are rare hematologic disorders accounting for less than 1% of cancers of the soft tissue and lymph nodes. Clinical presentation and prognosis of these disorders can be highly variable, leading to challenges for diagnosis and optimal management of these patients. Treatment often consists of systemic therapy, and recent studies support use of targeted therapies for patients with these disorders. Observation ("watch and wait") may be sufficient for select patients with mild disease. These NCCN Guidelines for Histiocytic Neoplasms include recommendations for diagnosis and treatment of adults with the most common histiocytic disorders: Langerhans cell histiocytosis, Erdheim-Chester disease, and Rosai-Dorfman disease.
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Affiliation(s)
| | - Eric Jacobsen
- Dana-Farber/Brigham and Women's Cancer Center
- Massachusetts General Hospital Cancer Center
| | - Robert Baiocchi
- The Ohio State University Comprehensive Cancer Center - James Cancer Hospital and Solove Research Institute
| | - Ilia Buhtoiarov
- Case Comprehensive Cancer Center/University Hospitals Seidman Cancer Center and Cleveland Clinic Taussig Cancer Institute Cleveland Clinic Children's Hospital
| | | | - Patrick K Campbell
- St. Jude Children's Research Hospital/The University of Tennessee Health Science Center
| | | | | | - Aron Flagg
- Yale Cancer Center/Smilow Cancer Hospital
| | | | | | | | - Paul C Hendrie
- Fred Hutchinson Cancer Research Center/Seattle Cancer Care Alliance
| | | | | | - Filip Janku
- The University of Texas MD Anderson Cancer Center
| | - Reem Karmali
- Robert H. Lurie Comprehensive Cancer Center of Northwestern University
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25
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Zhang J, Ma S, Yu J, Zheng S, Miao Y, Wang P, Yan X. Reactive Langerhans Cell Proliferation Mimicking Langerhans Cell Histiocytosis in Association with Sézary Syndrome: A Case Report and Literature Review. Clin Cosmet Investig Dermatol 2021; 14:1023-1028. [PMID: 34466010 PMCID: PMC8402951 DOI: 10.2147/ccid.s323865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2021] [Accepted: 08/15/2021] [Indexed: 11/23/2022]
Abstract
Sézary syndrome (SS) is a rare type of cutaneous T-cell lymphoma (CTCL) that is characterized by erythroderma, lymphadenopathy and circulating clonal T-cells (Sézary cells). However, to our knowledge, reactive Langerhans cell (LC) proliferation mimicking Langerhans cell histiocytosis (LCH) associated with SS has not been reported. In this report, we describe an unusual case of reactive LC proliferation mimicking LCH associated with SS in a 57-year-old female patient. With complaints of recurrent skin symptoms and enlarged lymph nodes (LNs), she was admitted to our center with a presumptive diagnosis of LCH as demonstrated by LN biopsy pathology. However, other than adenopathy, no lesions were noted in any organ system commonly involved in LCH. Typical Sézary cells were identified through morphology and further confirmed by flow cytometric immunophenotyping in peripheral blood (PB) and bone marrow (BM). In addition, T-cell receptor gene rearrangement was positive, whereas the BRAF V600E gene mutation was negative in skin, LN, PB and BM. The patient was ultimately diagnosed with SS with reactive LC proliferation. This case should remind clinicians to be wary of diagnosing LCH if LCH-like pathology occurs exclusively in LNs. Moreover, morphologic, immunologic, cytogenetic and molecular biologic studies should be performed to avoid misdiagnosis.
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Affiliation(s)
- Jinjing Zhang
- Department of Hematology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, 110001, People's Republic of China
| | - Shiyu Ma
- Department of Hematology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, 110001, People's Republic of China
| | - Jinxiang Yu
- Department of Hematology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, 110001, People's Republic of China
| | - Song Zheng
- Department of Dermatology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, 110001, People's Republic of China
| | - Yuan Miao
- Department of Pathology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, 110001, People's Republic of China
| | - Pingping Wang
- Department of Hematology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, 110001, People's Republic of China
| | - Xiaojing Yan
- Department of Hematology, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, 110001, People's Republic of China
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26
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Pseudomalignancies in Children: Histological Clues, and Pitfalls to Be Avoided. Dermatopathology (Basel) 2021; 8:376-389. [PMID: 34449607 PMCID: PMC8395711 DOI: 10.3390/dermatopathology8030042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 08/07/2021] [Accepted: 08/12/2021] [Indexed: 11/17/2022] Open
Abstract
The term “pseudomalignancy” covers a large, heterogenous group of diseases characterized by a benign cellular proliferation, hyperplasia, or infiltrate that resembles a true malignancy clinically or histologically. Here, we (i) provide a non-exhaustive review of several inflammatory skin diseases and benign skin proliferations that can mimic a malignant neoplasm in children, (ii) give pathologists some helpful clues to guide their diagnosis, and (iii) highlight pitfalls to be avoided. The observation of clinical–pathological correlations is often important in this situation and can sometimes be the only means (along with careful monitoring of the disease’s clinical course) of reaching a firm diagnosis.
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27
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Forest F, Dal Col P, Laville D, Court A, Rillardon M, Ramirez C, Rivoirard R, Stephan JL, Vassal F, Péoc'h M. Cyclin D1 expression in ganglioglioma, pleomorphic xanthoastrocytoma and pilocytic astrocytoma. Exp Mol Pathol 2021; 121:104652. [PMID: 34022185 DOI: 10.1016/j.yexmp.2021.104652] [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] [Received: 03/12/2021] [Revised: 05/11/2021] [Accepted: 05/17/2021] [Indexed: 11/18/2022]
Abstract
Ganglioglioma, pleomorphic xanthoastrocytoma (PXA) and pilocytic astrocytoma are rare brain neoplasms with frequent activation of mitogen-activated protein (MAP) kinase pathway. A downstream marker of MAP-kinase pathway activation is cyclin D1. However, the expression of cyclin D1 has not been studied in the differential diagnosis between these brain tumors. The aim of this work is to compare the expression of cyclin D1 in ganglioglioma, PXA, pilocytic astrocytoma. We also compared cyclin D1 expression in giant cell glioblastoma and in IDH wild type glioblastoma. Our work shows that roughly half of gangliogliomas have ganglion cells stained by cyclin D1 while two third of PXA have pleormophic cells stained by cyclin D1 and 15% of giant cell glioblastoma have pleomorphic cells stained by cyclin D1 (p < 0.001). Cyclin D1 never stains normal neurons either in the adjacent cortex of circumscribed tumor, or in entrapped neurons in IDH wild type glioblastomas. The expression of cyclin D1 is correlated to the presence of BRAF V600E mutation in ganglioglioma and PXA (p = 0.002). To conclude, cyclin D1 positivity might be used to confirm the neoplastic nature of ganglion cells. Cyclin D1 is expressed in most cases of BRAF V600E mutated gangliogliomas but also in cases without BRAF mutations suggesting an activation of MAP-kinase pathway through another way. Cyclin D1 immunohistochemistry has currently no or little role in the differential diagnosis of pilocytic astrocytoma. Its role in the differential diagnosis between PXA and giant cell glioblastoma needs to be further investigated on external series.
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Affiliation(s)
- Fabien Forest
- University Hospital of Saint Etienne, North Hospital, Department of Pathology, Avenue Albert Raimond, 42055, Saint Etienne CEDEX 2, France; University Hospital of Saint Etienne, North Hospital, Department of Molecular Biology of Tumors, Avenue Albert Raimond, 42055, Saint Etienne CEDEX 2, France; Corneal Graft Biology, Engineering and Imaging Laboratory, BiiGC, EA2521, Federative Institute of Research in Sciences and Health Engineering, Faculty of Medicine, Jean Monnet University, Saint-Etienne, France.
| | - Pierre Dal Col
- University Hospital of Saint Etienne, North Hospital, Department of Pathology, Avenue Albert Raimond, 42055, Saint Etienne CEDEX 2, France
| | - David Laville
- University Hospital of Saint Etienne, North Hospital, Department of Pathology, Avenue Albert Raimond, 42055, Saint Etienne CEDEX 2, France
| | - Alice Court
- University Hospital of Saint Etienne, North Hospital, Department of Pathology, Avenue Albert Raimond, 42055, Saint Etienne CEDEX 2, France
| | - Maxime Rillardon
- University Hospital of Saint Etienne, North Hospital, Department of Pathology, Avenue Albert Raimond, 42055, Saint Etienne CEDEX 2, France
| | - Carole Ramirez
- University Hospital of Saint Etienne, North Hospital, Department of Neurology, Avenue Albert Raimond, 42055, Saint Etienne CEDEX 2, France; Lucien Neuwith Cancer Institute, Department of Medical Oncology, Avenue Albert Raimond, 108 bis Avenue Albert Raimond, 42270 Saint-Priest-en-Jarez, France
| | - Romain Rivoirard
- Lucien Neuwith Cancer Institute, Department of Medical Oncology, Avenue Albert Raimond, 108 bis Avenue Albert Raimond, 42270 Saint-Priest-en-Jarez, France
| | - Jean-Louis Stephan
- University Hospital of Saint Etienne, North Hospital, Department of Pediatric Oncology, Avenue Albert Raimond. 42055, Saint Etienne CEDEX 2, France
| | - François Vassal
- University Hospital of Saint Etienne, North Hospital, Department of Neurosurgery, Avenue Albert Raimond, 42055, Saint Etienne CEDEX 2, France
| | - Michel Péoc'h
- University Hospital of Saint Etienne, North Hospital, Department of Pathology, Avenue Albert Raimond, 42055, Saint Etienne CEDEX 2, France; Corneal Graft Biology, Engineering and Imaging Laboratory, BiiGC, EA2521, Federative Institute of Research in Sciences and Health Engineering, Faculty of Medicine, Jean Monnet University, Saint-Etienne, France
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28
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Dasatinib induces a dramatic response in a child with refractory juvenile xanthogranuloma with a novel MRC1-PDGFRB fusion. Blood Adv 2021; 4:2991-2995. [PMID: 32609843 DOI: 10.1182/bloodadvances.2020001890] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 05/21/2020] [Indexed: 12/20/2022] Open
Abstract
Key Points
Juvenile xanthogranuloma (JXG) usually presents with lesions isolated to the skin; however, aggressive, disseminated forms also occur. Identification of a novel MRC1-PDGFRB fusion in a child with JXG guided targeted therapy with dasatinib, leading to a dramatic response.
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29
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Tashakori M, Thakral B, Tang G, Khoury JD, Medeiros LJ. From the archives of MD Anderson Cancer Center: A case of concurrent follicular lymphoma and Langerhans cell sarcoma with a review of the literature. Ann Diagn Pathol 2021; 52:151720. [PMID: 33676171 DOI: 10.1016/j.anndiagpath.2021.151720] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 01/26/2021] [Accepted: 02/08/2021] [Indexed: 10/22/2022]
Abstract
Transdifferentiation of follicular lymphoma to a Langerhans cell neoplasm is rarely reported and not well understood. Here we present a case, review the literature and discuss some of the biological underpinnings of lineage switch of B cells to histiocytes/Langerhans cells. A 31-year-old woman had follicular lymphoma (FL) and Langerhans cell sarcoma (LCS) co-localized above and below diaphragm. The FL was low-grade, had typical morphologic features, and was positive for CD10, BCL-2, and BCL-6. The LCS was cytologically atypical with necrosis and a high mitotic rate, and the immunophenotype supported Langerhans cell lineage positive for CD1a, CD207/langerin, and S-100 protein. Both tumors carried IGH-BCL2 and the LCS cells had immunophenotypic evidence of a residual B cell program, supporting the notion that these neoplasms are clonally related. The case reported is unusual because the patient was young and both diseases presented simultaneously, before any therapy. In addition, immunohistochemical analysis showed that the LCS was negative for BRAF V600E and phospho-ERK, suggesting that the LCS belongs to the known subset of Langerhans cell tumors lacking BRAF V600E and MAP2K1 mutations. Concurrent occurrence of FL and Langerhans cell neoplasm is an unusual phenomenon, with 10 cases reported previously: 4 Langerhans cell histiocytosis and 6 Langerhans cell sarcoma, including this case.
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Affiliation(s)
- Mehrnoosh Tashakori
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Beenu Thakral
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Guilin Tang
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - Joseph D Khoury
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America
| | - L Jeffrey Medeiros
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, United States of America.
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30
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Rosai-Dorfman Disease Displays a Unique Monocyte-Macrophage Phenotype Characterized by Expression of OCT2. Am J Surg Pathol 2021; 45:35-44. [PMID: 33177341 DOI: 10.1097/pas.0000000000001617] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Rosai-Dorfman disease (RDD) is a rare histiocytosis with heterogenous clinical features. In this study, we characterized the histologic and phenotypic features in 33 RDD patients to better define the pathologic diagnosis. Cases included 24 patients with extracutaneous disease ("R" group), and 9 patients with lesions limited to the skin or subcutaneous tissue ("C" group). We identified OCT2 as a novel marker for the monocyte-macrophage phenotype of RDD, expressed in 97% of RDD cases. In contrast, OCT2 expression was seen in 0% of Erdheim-Chester disease cases and 6.7% of Langerhans cell histiocytosis cases. Other markers useful in the diagnosis of RDD included S100 (100%), CD163 (88%), and cyclin D1 (97%). In a subset of cases, RDD showed moderate to strong expression of factor 13a (30%), p16 (64%), and phosphorylated extracellular signal-regulated kinase (45%); RDD was uniformly negative for ZBTB46, CD1a, and langerin. Within the "R group" of RDD, increased expression of factor 13a or phosphorylated extracellular signal-regulated kinase showed a statistically significant association with multifocal disease (P<0.05). Identification of the unique monocyte-macrophage phenotype of RDD with OCT2 expression furthers our understanding of this complex disease and allows for more uniform classification.
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31
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Ben Rejeb S, Charfi L, Sahraoui G, Boujelben N, Mrad K, Doghri R. Cyclin D1: potential utility as marker for Langerhans cell histiocytosis. J Immunoassay Immunochem 2021; 42:370-379. [PMID: 33444078 DOI: 10.1080/15321819.2020.1870132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Langerhans cell histiocytosis (LCH) is a rare disorder of unknown etiopathogenesis. Diagnosis is based on the identification of CD1a positive histiocytic infiltrate. Activation of the mitogen-activated-protein-kinase (MAPK) is constantly observed in LCH and therefore downstream markers such as cyclin D1 may be a useful marker for LCH. The aim of this study was to investigate the expression of cyclin D1 in LCH. We assessed the immunohistochemical expression of cyclin D1 (clone SP4-R) in series of 16 cases of confirmed LCH. Expression of Cyclin D1 was scored as weak, moderate, and strong nuclear staining and results were interpreted by two pathologists. The percentage of positivity was assessed. The mean age of patients was 13.7 years old with a male to female ratio of 1:3. The most common involved site was bone (n = 9; 56,3%), followed by lymph node (n = 5; 31,2%) and skin (n = 2; 12,5%). All cases showed nuclear staining for cyclin D1 with variable intensity. It was assessed moderate in 43,8% (n = 7) and strong in 56,2% (n = 9). The percentage of positive cells was >50% in 13 cases and <50% in 3 cases. Our results have shown that all cases of Langerhans cell histiocytosis from various sites express cyclin D1. This finding may be attributed to MAPK pathway activation that has been described in LCH. Otherwise, cyclin D1 is not significantly expressed in reactive Langerhans cell proliferations. Therefore, cyclin D1 immunohistochemistry may be useful as a diagnostic marker and in excluding non-neoplastic mimics of LCH.
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Affiliation(s)
- Sarra Ben Rejeb
- Pathology, Security Forces Hospital, La Marsa, Tunisia.,Pathology, Institut Salah-Azaiz, Tunis, Tunisia
| | | | | | | | - Karima Mrad
- Pathology, Institut Salah-Azaiz, Tunis, Tunisia
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32
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Langerhans Cell Histiocytosis Associated With Renal Cell Carcinoma Is a Neoplastic Process: Clinicopathologic and Molecular Study of 7 Cases. Am J Surg Pathol 2021; 44:1658-1665. [PMID: 32910018 DOI: 10.1097/pas.0000000000001562] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Langerhans cell histiocytosis (LCH) is a rare histiocytic disorder composed of Langerhans cells admixed with reactive mononuclear and granulocytic cells, associated with prominent eosinophils. LCH is considered a neoplasm, driven in most cases by oncogenic RAS/RAF/MEK/ERK pathway mutations. The disease predominantly affects children. Urinary system involvement has rarely been reported in a multisystem disease setting. We describe 7 patients who presented with LCH occurring within (6 cases) or after (1 case) a resected clear cell (n=6) or clear cell papillary (n=1) renal cell carcinoma (RCC), identified prospectively in our routine and consultation files (2012 to 2019). The patients included 5 women and 2 men, with a median age of 54 years (range, 39 to 73 y), none with a history of LCH or LCH manifestations before the time of RCC diagnosis. The median size of the RCC was 3.5 cm (range, 1.8 to 8.3 cm). Treatment included partial (5 cases), or radical (2 cases) nephrectomy. All RCCs on gross examination showed at least focal cystic changes and were low grade (World Health Organization [WHO]/International Society of Urologic Pathologists [ISUP] grade 1 to 2). The LCH foci were detected as incidental histological finding within the resected RCC in all six cases and they were limited to few high-power fields (<2 mm) in 5 of 6 cases, but in the sixth case, they occupied almost the entire clear cell papillary RCC (2 cm nodule). No LCH manifestations were detected in the normal kidney or in perinephric fat. The seventh patient developed LCH within inguinal deep soft tissue followed by systemic manifestations 6 years after clear cell RCC. Langerhans cell immunophenotype was supported by the reactivity for S-100, CD1a, and langerin and by the negative pankeratin. Successful pyrosequencing of microdissected LCH DNA revealed the V600E BRAF mutation in all 6 cases of LCH within RCC. To our knowledge, only 3 similar cases were published since 1980; the only case tested for BRAF mutation showed wild-type BRAF. This is the first study analyzing the morphologic and genetic features of a cohort of LCH associated with RCC. In our experience, these cases may be underrecognized in practice, or may erroneously be diagnosed as RCC dedifferentiation or high-grade sarcomatoid transformation. Finally, the detection of BRAF mutation further confirms that LCH in this setting is indeed a neoplasm, rather than a reactive lesion.
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33
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Watanabe S, Shimomura A, Kubo T, Sekimizu M, Seo T, Watanabe SI, Kawai A, Yamamoto N, Tamura K, Kohno T, Ichikawa H, Yoshida A. BRAF V600E mutation is a potential therapeutic target for a small subset of synovial sarcoma. Mod Pathol 2020; 33:1660-1668. [PMID: 32238877 DOI: 10.1038/s41379-020-0530-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 03/12/2020] [Accepted: 03/12/2020] [Indexed: 12/17/2022]
Abstract
Synovial sarcoma (SS) is an aggressive tumor that most often affects the deep soft tissues in young adults. Intrathoracic SS is rare and is associated with poor outcome, highlighting the urgent need for a novel therapeutic strategy. In the process of clinical sequencing, we identified two patients with intrathoracic SS harboring the BRAF V600E mutation. The patients were women aged 32 and 23 years, and both presented with SS18-SSX2-positive monophasic SS in the thoracic cavity. BRAF V600E mutations were detected by next generation sequencing, and validated immunohistochemically by diffuse intense positivity to BRAF V600E mutation-specific antibodies. The phosphorylated ERK (pERK) immunohistochemistry result was also positive. One patient received a combination therapy of dabrafenib and trametinib, which led to tumor shrinkage. However, the tumor growth progressed 7.5 months later with an additional NRAS Q61K mutation. Immunohistochemical screening of 67 archival SS tumor samples failed to identify additional samples with BRAF V600E mutation. However, 32% of BRAF V600E-negative cases was positive for pERK, and one of the six tumors showing the highest pERK expression harbored an FGFR2-activating mutation. This is the first report of targetable BRAF mutation in a small subset of SS. Our study suggests involvement of the mitogen-activated protein kinase pathway and the potential clinical implication of BRAF mutation screening in SS.
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Affiliation(s)
- Sho Watanabe
- Department of Diagnostic Pathology, National Cancer Center Hospital, Tokyo, Japan.,Division of Cancer Immunology, Research Institute/Exploratory Oncology Research & Clinical Trial Center, National Cancer Center East, Chiba, Japan
| | - Akihiko Shimomura
- Department of Breast and Medical Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - Takashi Kubo
- Division of Translational Genomics, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Tokyo, Japan.,Department of Clinical Genomics, National Cancer Center Research Institute, Tokyo, Japan
| | - Masaya Sekimizu
- Department of Clinical Genomics, National Cancer Center Research Institute, Tokyo, Japan.,Department of Orthopaedic Surgery, Showa University School of Medicine, Tokyo, Japan
| | - Takuji Seo
- Department of Breast and Medical Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - Shun-Ichi Watanabe
- Department of Thoracic Surgery, National Cancer Center Hospital, Tokyo, Japan
| | - Akira Kawai
- Department of Musculoskeletal Oncology, National Cancer Center Hospital, Tokyo, Japan.,Rare Cancer Center, National Cancer Center Hospital, Tokyo, Japan
| | - Noboru Yamamoto
- Department of Experimental Therapeutics, National Cancer Center Hospital, Tokyo, Japan
| | - Kenji Tamura
- Department of Breast and Medical Oncology, National Cancer Center Hospital, Tokyo, Japan
| | - Takashi Kohno
- Division of Translational Genomics, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Tokyo, Japan.,Division of Genome Biology, National Cancer Center Research Institute, Tokyo, Japan
| | - Hitoshi Ichikawa
- Division of Translational Genomics, Exploratory Oncology Research and Clinical Trial Center, National Cancer Center, Tokyo, Japan.,Department of Clinical Genomics, National Cancer Center Research Institute, Tokyo, Japan
| | - Akihiko Yoshida
- Department of Diagnostic Pathology, National Cancer Center Hospital, Tokyo, Japan. .,Rare Cancer Center, National Cancer Center Hospital, Tokyo, Japan.
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34
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Paredes SEY, Almeida LY, Trevisan GL, Polanco XBJ, Silveira HA, Vilela Silva E, Segato RAB, da Silva LAB, Chahud F, León JE. Immunohistochemical characterization of immune cell infiltration in paediatric and adult Langerhans cell histiocytosis. Scand J Immunol 2020; 92:e12950. [PMID: 32738155 DOI: 10.1111/sji.12950] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Revised: 07/13/2020] [Accepted: 07/21/2020] [Indexed: 01/15/2023]
Abstract
Langerhans cell histiocytosis (LCH) is an inflammatory myeloid neoplasia commonly affecting children with frequent somatic mutations in MAPK pathway genes including BRAFV600E and MAP2K1. Some studies suggest that LCH cells can recruit and modulate inflammatory cells, which could provide reciprocal survival signals. To characterize the immune profile of infiltrating inflammatory cells, and to clarify their participation in LCH pathogenesis, a detailed immunohistochemical analysis was performed. Fifteen (10 children, 5 adults) LCH cases were assessed through macrophage (CD68 and CD163), mature dendritic cell (mDC; CD83 and CD208), regulatory T cell (Treg; CD4, CD25 and FOXP3) and cytotoxic lymphocyte (CL; CD56, CD57, perforin and granzyme B) immunomarkers. Moreover, lymphocytic and LCH markers were also analysed. All cases were S100, CD1a, CD207 and CD4-positive. Bcl-2 and cyclin D1 expression was observed in 13 of 15 cases. In the immune microenvironment, M2-polarized macrophages and Tregs were the predominant cell populations, followed by significantly (P < .005) smaller levels of mDCs and CLs. Additionally, the number of CD3 + cells was significantly higher than that of CD20 + cells. In the CD3 + cell population, there were a significantly higher number of CD4 + cells than CD8 + cells. While there were no differences when comparing the paediatric and adult populations, FOXP3 + cells were significantly higher in patients with multisystem involvement and treated with chemotherapy, than single-site cases and those without chemotherapy. Our results suggest that M2-polarized macrophages and Treg infiltration can promote LCH development and survival, probably through pro-tumoral, immunosuppressive and/or cytokine-mediated mechanisms. This work highlights the need for further exploration of immune-targeted therapy for LCH.
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Affiliation(s)
- Silvia Elena Yacarini Paredes
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of Sao Paulo (FORP/USP), Ribeirão Preto, Brazil
| | - Luciana Yamamoto Almeida
- Department of Clinical Medicine, Hematology Division, Ribeirão Preto Medical School (FMRP/USP), University of São Paulo, Ribeirão Preto, Brazil
| | - Glauce Lunardelli Trevisan
- Department of Pathology and Forensic Medicine, Ribeirão Preto Medical School (FMRP/USP), University of São Paulo, Ribeirão Preto, Brazil
| | - Xiomara Beatriz Jimenez Polanco
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of Sao Paulo (FORP/USP), Ribeirão Preto, Brazil
| | - Heitor Albergoni Silveira
- Oral Pathology, Department of Stomatology, Public Oral Health and Forensic Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo (FORP/USP), Ribeirão Preto, Brazil
| | - Evânio Vilela Silva
- Oral Pathology, Department of Stomatology, Public Oral Health and Forensic Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo (FORP/USP), Ribeirão Preto, Brazil
| | - Raquel Assed Bezerra Segato
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of Sao Paulo (FORP/USP), Ribeirão Preto, Brazil
| | - Léa Assed Bezerra da Silva
- Department of Pediatric Dentistry, School of Dentistry of Ribeirão Preto, University of Sao Paulo (FORP/USP), Ribeirão Preto, Brazil
| | - Fernando Chahud
- Department of Pathology and Forensic Medicine, Ribeirão Preto Medical School (FMRP/USP), University of São Paulo, Ribeirão Preto, Brazil
| | - Jorge Esquiche León
- Oral Pathology, Department of Stomatology, Public Oral Health and Forensic Dentistry, School of Dentistry of Ribeirão Preto, University of São Paulo (FORP/USP), Ribeirão Preto, Brazil
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Ungari M, Caresana G, Tanzi G, Drera B, Frittoli MC, Gusolfino MD, Ferrero G, Varotti E, Manotti L, Trombatore M, Bertoni R. Congenital Unilesional Cutaneous Langerhans Cell Histiocytosis: A Case Report. Am J Dermatopathol 2020; 43:e38-e42. [PMID: 32769549 DOI: 10.1097/dad.0000000000001770] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
ABSTRACT Langerhans cell histiocytosis (LCH) is a clonal proliferation of bone-marrow-derived cells, which normally reside as epidermal and mucosal dendritic cells involved in antigen presentation. It is a rare disease more common in children than adults, that is believed to be neoplastic in most cases. The diagnosis is based on clinical and radiological findings in combination with histopathologic, immunophenotypic, or ultrastructural analyses. LCH have a broad spectrum of clinical manifestations, ranging from benign cutaneous lesions to malignant multisystem disease. Based on the extent of involvement at diagnosis, LCH can be divided in single-system LCH when only one organ or system is involved, usually with multiple lesions, and multisystem LCH, when 2 or more organs or systems are involved at diagnosis. One variant of LCH is characterized by congenital isolated cutaneous involvement. It typically manifests at birth or in the postnatal period with a widespread eruption of red-to-brown papulo-nodules or, more uncommonly, a solitary lesion. The overall prognosis for single lesion skin limited LCH is excellent and most lesions spontaneously resolve within 4-18 weeks. Systemic involvement is rare. Skin findings cannot predict systemic disease and obtaining an oncology consultation is recommended for further evaluation. Herein, we present an additional case in a full-term, well-appearing, female infant with an isolated, asymptomatic, ulcerated, papule of the left arm, that was noted at birth.
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Affiliation(s)
| | | | | | - Bruno Drera
- Intensive Neonatal Therapy, A.S.S.T. Cremona, Cremona, Italy
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Thingujam B, Yu YT, Lee JYY, Medeiros LJ, Chang KC. Tumour-stage mycosis fungoides initially misdiagnosed as Langerhans cell histiocytosis. Pathology 2020; 52:593-596. [PMID: 32600661 DOI: 10.1016/j.pathol.2020.04.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 03/29/2020] [Accepted: 04/01/2020] [Indexed: 11/18/2022]
Affiliation(s)
- Bipin Thingujam
- Department of Pathology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan; Babina Diagnostics, Imphal, Manipur, India
| | - Yu-Ting Yu
- Department of Pathology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Julia Yu-Yun Lee
- Department of Dermatology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - L Jeffrey Medeiros
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, Texas, USA
| | - Kung-Chao Chang
- Department of Pathology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
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Clinical, histopathologic, and immunoarchitectural features of dermatopathic lymphadenopathy: an update. Mod Pathol 2020; 33:1104-1121. [PMID: 31896812 DOI: 10.1038/s41379-019-0440-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 11/06/2019] [Accepted: 11/26/2019] [Indexed: 12/27/2022]
Abstract
Dermatopathic lymphadenopathy is a distinctive form of paracortical lymph node hyperplasia that usually occurs in the setting of chronic dermatologic disorders. The aim of this study is to update our understanding of the clinicopathologic and immunophenotypic features of dermatopathic lymphadenopathy. The study cohort was 50 lymph node samples from 42 patients diagnosed with dermatopathic lymphadenopathy. The patients included 29 women and 13 men with a median age of 49 years (range, 12-79). Twenty-two (52%) patients had a dermatologic disorder, including mycosis fungoides (n = 6), chronic inflammatory dermatoses (n = 13), melanoma (n = 1), squamous cell carcinoma (n = 1), and Kaposi sarcoma in the context of human immunodeficiency virus infection (n = 1). Twenty (48%) patients did not have dermatologic manifestations. Lymph node biopsy specimens were axillary (n = 22), inguinal (n = 21), cervical (n = 4), and intramammary (n = 3). All lymph nodes showed paracortical areas expanded by lymphocytes; dendritic cells, including interdigitating dendritic cells and Langerhans cells; and macrophages. Melanophages were detected in 48 (98%) lymph nodes. Immunohistochemical analysis provided results that are somewhat different from those previously reported in the literature. In the paracortical areas of lymph node, S100 protein was expressed in virtually all dendritic cells, and CD1a was expressed in a significantly greater percentage of cells than langerin (80 vs. 35%, p < 0.0001). These results suggest that the paracortical regions of dermatopathic lymphadenopathy harbor at least three immunophenotypic subsets of dendritic cells: Langerhans cells (S100+, CD1a+(high), langerin+), interdigitating dendritic cells (S100+, CD1a+(low), langerin-), and a third (S100+, CD1a-, langerin-) minor population of dendritic cells. Furthermore, in more than 60% of dermatopathic lymph nodes, langerin highlighted trabecular and medullary sinuses and cords, showing a linear and reticular staining pattern, which could be a pitfall in the differential diagnosis with Langerhans cell histiocytosis involving lymph nodes.
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38
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Pors J, Churg A. Cyclin D1 and BRAF V600E immunohistochemical staining in pulmonary Langerhans cell histiocytosis. Histopathology 2020; 76:1091-1093. [PMID: 31965621 DOI: 10.1111/his.14068] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 01/14/2020] [Accepted: 01/16/2020] [Indexed: 11/29/2022]
Affiliation(s)
- Jennifer Pors
- Department of Pathology, Vancouver General Hospital and University of British Columbia, Vancouver, British Columbia, Canada
| | - Andrew Churg
- Department of Pathology, Vancouver General Hospital and University of British Columbia, Vancouver, British Columbia, Canada
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Ungari M, Ferrero G, Varotti E, Gusolfino MD, Manotti L, Tanzi G, Trombatore M, Bertoni R. Langerhans cell histiocytosis of an intra-mammary lymph node in an 18-year-old woman. Pathologica 2020; 112:50-55. [PMID: 32202540 PMCID: PMC8138496 DOI: 10.32074/1591-951x-27-19] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Accepted: 12/19/2019] [Indexed: 12/16/2022] Open
Abstract
We describe an 18-year-old woman with several month's history of a 12 x 7 mm palpable mammary nodule, that was hypoechoic, with regular margins and vascularization areas by ultrasound. A fibroadenoma was hypothesized (American College of Radiology BI-RADS 3). A 14 G needle biopsy was performed, showing a LC proliferation suspected for LCH of a lymph node, with florid dermatopathic lymphadenopathy in differential diagnosis. The multidisciplinary team of the breast clinic decided to perform a lumpectomy and a diagnosis of LCH involving an intra-mammary lymph node was made. Langerhans cells (LC) are dendritic cells characterized by grooved nuclei, irregular nuclear contours, and abundant cytoplasm, that normally reside in the skin and mucosal surfaces. They were positive for CD1a, langerin/CD207, and S100 by immunohistochemistry. Langerhans cell histiocytosis (LCH) is a clonal proliferation of histiocytes that is thought to be neoplastic in most cases. Reactive LC can be distinguished from LCH by cyclin D1 immunostaining, which is positive only in LCH. About 50% of cases have BRAF V600E mutations. The revised classification of histiocytes divides LCH in subtypes: LCH SS (single system), LCH lung positive, LCH Multiple System/Risk Organ negative and LCH Multiple System/Risk Organ positive. Localized disease can progress to multisystem involvement. The diagnosis of LCH is based on clinical and radiological findings in combination with histopathological, immunophenotypic or ultrastructural analyses identifying tissue infiltration by LC. It is recommended that biopsy confirmation of suspected LCH be performed in all cases. Lymph nodes may be the only site of disease or a part of multisystem involvement by LCH. The histologic differential diagnosis is discussed.
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40
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Utility of Cyclin D1 in the Diagnostic Workup of Hematopoietic Neoplasms: What Can Cyclin D1 Do for Us? Adv Anat Pathol 2019; 26:281-291. [PMID: 31261248 DOI: 10.1097/pap.0000000000000241] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Cyclin D1, encoded by CCND1, promotes cell cycle progression from G1 to S phase. Its expression is induced by MAPK/ERK pathway as well as translocations/rearrangements involving CCND1 gene. The evaluation of cyclin D1 expression by immunohistochemistry plays an important role in the diagnostic workup of various hematopoietic diseases. In this review, we aimed to discuss the value of cyclin D1 immunostain in the diagnosis and different diagnosis of hematopoietic neoplasms.
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Langerhans Cell Histiocytosis, Non-Langerhans histiocytosis and concurrent Papillary Thyroid Carcinoma with BRAF V600E mutations: A case report and literature review. HUMAN PATHOLOGY: CASE REPORTS 2019; 17. [PMID: 31592429 PMCID: PMC6779126 DOI: 10.1016/j.hpcr.2019.200302] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
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Baraban E, Sadigh S, Rosenbaum J, Van Arnam J, Bogusz AM, Mehr C, Bagg A. Cyclin D1 expression and novel mutational findings in Rosai-Dorfman disease. Br J Haematol 2019; 186:837-844. [PMID: 31172509 DOI: 10.1111/bjh.16006] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 04/16/2019] [Indexed: 12/13/2022]
Abstract
Rosai-Dorfman disease (RDD) is an enigmatic histiocytic disorder classically diagnosed by a distinctive combination of pathological features: emperipolesis, or migration of intact haematological cells through the voluminous cytoplasm of lesional histiocytes, and expression of S100 by these histiocytes. The pathogenesis has long been elusive until the recent detection of recurrent and mutually exclusive mutations in several oncogenes in the mitogen-activated protein kinase (MAPK) pathway. Based on these findings, we investigated a cohort of 21 RDD patients and found that the lesional histiocytes in 86% (18/21) of patients exhibited strong and diffuse nuclear Cyclin D1 expression, which not only may provide a diagnostic marker for this sometimes pathologically challenging disease, but also probably reflects constitutive MAPK pathway activation because we additionally identified phosphorylated-ERK expression in 90% (19/21) of cases. Further, we performed massively parallel sequencing on a subset (6/18) of the CyclinD1 positive cases, identifying several mutations that have not been previously reported in RDD. Taken together, our findings bolster the concept of RDD as a disease of MAPK activation in a substantial percentage of cases and enhance the current understanding of the pathogenesis of RDD.
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Affiliation(s)
- Ezra Baraban
- Department of Pathology and Laboratory Medicine, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Sam Sadigh
- Department of Pathology and Laboratory Medicine, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Jason Rosenbaum
- Department of Pathology and Laboratory Medicine, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - John Van Arnam
- Department of Pathology and Laboratory Medicine, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Agata M Bogusz
- Department of Pathology and Laboratory Medicine, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Chelsea Mehr
- Department of Pathology and Laboratory Medicine, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Adam Bagg
- Department of Pathology and Laboratory Medicine, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
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43
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Pita da Veiga G, Sainz-Gaspar L, Suárez-Peñaranda JM, Sánchez-Aguilar D, Vázquez-Veiga H, Fernández-Redondo V. Late cutaneous reaction after gold patch testing with features of Langerhans cell histiocytosis. Contact Dermatitis 2019; 81:291-292. [PMID: 30941783 DOI: 10.1111/cod.13281] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2019] [Revised: 03/21/2019] [Accepted: 04/01/2019] [Indexed: 11/30/2022]
Affiliation(s)
| | - Laura Sainz-Gaspar
- Department of Dermatology, University Hospital Complex, Santiago de Compostela, Spain
| | | | | | - Hugo Vázquez-Veiga
- Department of Dermatology, University Hospital Complex, Santiago de Compostela, Spain
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44
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Maggio A, Climent F, Turégano P, Sirvent JJ. [Multisystem histiocytosis of Langerhans cells associated with Lymphomatoid papulosis: An accidental finding? Case report and literature review]. REVISTA ESPAÑOLA DE PATOLOGÍA : PUBLICACIÓN OFICIAL DE LA SOCIEDAD ESPAÑOLA DE ANATOMÍA PATOLÓGICA Y DE LA SOCIEDAD ESPAÑOLA DE CITOLOGÍA 2019; 52:130-135. [PMID: 30902378 DOI: 10.1016/j.patol.2018.04.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 04/24/2018] [Accepted: 04/29/2018] [Indexed: 10/28/2022]
Abstract
Langerhans cell histiocytosis (LCH) is a disease characterized by proliferation of CD1a+dendritic cells with local or diffuse organ compromise. The identification of recurrent gene mutations has confirmed the hypothesis of LCH as a true neoplasm. Lymphomatoid papulosis (LyP) belongs to the spectrum of CD30+primary cutaneous lymphomas. LCH has been described in association with other lymphoproliferative disorders. However, lesions constituted by Langerhans cells (LC) have been commonly considered reactive, related to cytokines produced by the lymphoma-microenvironment interaction. Some authors designate these lesions as "Langerhans cells-like lesions". We present the case of a 28-years-old woman with multisystem LCH and simultaneous PyL lesions with reactive LC hyperplasia.
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Affiliation(s)
- Antonio Maggio
- Servicio de Anatomía Patológica, Hospital Universitario Joan XXIII, Tarragona, España.
| | - Fina Climent
- Servicio de Anatomía Patológica, Hospital Universitario de Bellvitge-IBIDELLL, L'Hospitalet de Llobregat , España
| | - Pilar Turégano
- Servicio de Dermatología, Hospital Universitario Joan XXIII, Tarragona, España
| | - Juan Jose Sirvent
- Servicio de Anatomía Patológica, Hospital Universitario Joan XXIII, Tarragona, España; Universidad Rovira i Virgili, Tarragona, España; Institut d'Investigació Sanitària Pere Virgili, Tarragona, España
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45
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CyclinD1 Is Useful to Differentiate Langerhans Cell Histiocytosis From Reactive Langerhans Cells. Am J Dermatopathol 2019; 41:188-192. [DOI: 10.1097/dad.0000000000001250] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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46
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Garces S, Yin CC, Patel KP, Khoury JD, Manning JT, Li S, Xu J, Pina-Oviedo S, Johnson MR, González S, Molgó M, Ruiz-Cordero R, Medeiros LJ. Focal Rosai-Dorfman disease coexisting with lymphoma in the same anatomic site: a localized histiocytic proliferation associated with MAPK/ERK pathway activation. Mod Pathol 2019; 32:16-26. [PMID: 30323237 DOI: 10.1038/s41379-018-0152-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 09/03/2018] [Accepted: 09/04/2018] [Indexed: 01/12/2023]
Abstract
Rosai-Dorfman disease is a rare histiocytic disorder shown to have gene mutations that activate the MAPK/ERK pathway in at least one-third of cases. Most patients with Rosai-Dorfman disease present with bulky lymphadenopathy or extranodal disease, but rarely Rosai-Dorfman disease is detected concomitantly with lymphoma in the same biopsy specimen. The underlying molecular mechanisms of focal Rosai-Dorfman disease occurring in the setting of lymphoma have not been investigated. We report 12 cases of Rosai-Dorfman disease and lymphoma involving the same anatomic site. There were five men and seven women (age, 23 to 77 years) who underwent lymph node (n = 11) or skin (n = 1) biopsy; the lymphomas included nodular lymphocyte predominant Hodgkin lymphoma (n = 6), classical Hodgkin lymphoma (n = 4), small lymphocytic lymphoma (n = 1) and extranodal marginal zone lymphoma (n = 1). The foci of Rosai-Dorfman disease in all cases had S100 protein-positive histiocytes undergoing emperipolesis. No patients had Rosai-Dorfman disease at other anatomic sites at initial diagnosis and at last follow-up (median, 40 months). We performed immunohistochemical analysis to assess activity of the MAPK/ERK pathway in the Rosai-Dorfman disease foci. We also micro-dissected disease foci and analyzed 146 genes using next-generation sequencing in four cases with adequate DNA; the panel included genes previously reported to be mutated in Rosai-Dorfman disease. All cases were negative for gene mutations. Nevertheless, all cases were positive for cyclin D1 and most cases showed p-ERK expression indicating that the MAPK/ERK pathway is active in the histiocytes of focal Rosai-Dorfman disease. We conclude that focal Rosai-Dorfman disease coexisting with lymphoma is a clinically benign and localized histiocytic proliferation. These data also indicate that the MAPK/ERK pathway is active in focal Rosai-Dorfman disease although we did not identify activating mutations. These findings suggest that the pathogenesis of focal Rosai-Dorfman disease is different from that of usual cases of Rosai-Dorfman disease.
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Affiliation(s)
- Sofia Garces
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - C Cameron Yin
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Keyur P Patel
- 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
| | - John T Manning
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Shaoying Li
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Jie Xu
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Sergio Pina-Oviedo
- Department of Pathology, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Malisha R Johnson
- Department of Hematopathology, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Sergio González
- Department of Pathology, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Montserrat Molgó
- Department of Dermatology, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Roberto Ruiz-Cordero
- 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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47
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Fraitag S. [Dermatopathology histoseminar. Case 3]. Ann Pathol 2018; 38:223-229. [PMID: 30082024 DOI: 10.1016/j.annpat.2018.05.012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 05/25/2018] [Indexed: 11/28/2022]
Affiliation(s)
- Sylvie Fraitag
- Hôpital Necker-Enfants Malade, AP-HP, 149, rue de Sèvres, 75015 Paris, France.
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48
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Nohra O, Fraitag S. [Dermatopathology histoseminar. Case 2]. Ann Pathol 2018; 38:219-222. [PMID: 30082023 DOI: 10.1016/j.annpat.2018.05.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/25/2018] [Indexed: 10/28/2022]
Affiliation(s)
- Olivier Nohra
- Cabinet de pathologie, 273, avenue Carnot, 17000 La Rochelle, France
| | - Sylvie Fraitag
- Hôpital Necker-Enfants Malade, AP-HP, 149, rue de Sèvres, 75015 Paris, France.
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Abstract
Giant cell rich lesions of the temporal bone encompass a wide spectrum of disease that includes infectious, reactive, and neoplastic processes. When dealing with any lesion that can potentially involve bone, it is important to understand both the clinical presentation and to correlate the histologic findings with the radiologic imaging. This review discusses the clinical, the pathologic features including the differential diagnosis, and the treatment of some of the more commonly encountered giant cell rich entities in this region.
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